Starship isn't the only SpaceX rocket flying today.

A Falcon 9 rocket launched from California's Vandenberg Space Force Base today (July 16), carrying 21 satellites for the U.S. military's advanced new "Tranche 1 Transport Layer" (T1TL) constellation to orbit.

Liftoff took place at 4:32 p.m. EDT (2032 GMT; 1:32 p.m. local California time).

SpaceX's Starship megarocket — the biggest and most powerful launch vehicle ever built — is slated to make its 13th test flight a few hours later. It will lift off from the company's Starbase site in South Texas during a 90-minute window that opens at 6:45 p.m. EDT (2245 GMT; 5:45 p.m. local Texas time).

SpaceX will stream that mission live, and Space.com will carry the feed. Coverage will begin about half an hour before launch.

Today's Falcon 9 flight helps assemble the T1TL, a network in low Earth orbit (LEO) that will be operated by the U.S. Space Force's Space Development Agency (SDA).

The T1TL "will provide global communications access and deliver persistent regional encrypted connectivity in support of warfighter missions around the globe," SDA officials wrote in a explainer.

The T1TL will eventually consist of 126 satellites, which will be built by York Space Systems, Lockheed Martin and Northrop Grumman. Sixty-three of the spacecraft have now launched to date, on three Falcon 9 launches from Vandenberg — one last September, another last October and today.

These 126 spacecraft will be part of a larger LEO network that the SDA calls the Proliferated Warfighter Space Architecture.

The PWSA is "a proliferated constellation of hundreds of optically linked small satellites, in low-Earth orbit (LEO), delivering capability at speed to the warfighter," SDA officials wrote in a Tranche 1 fact sheet.

"SDA leverages spiral development to deploy and proliferate new capability into a new generation of the PWSA every two years, called a 'tranche,' to continually increase capability used by the warfighter," they added.

Everything went according to plan today, at least during the mission's early stages. The Falcon 9's first stage came back to Earth about 8.5 minutes after liftoff for a landing in the Pacific Ocean, on the drone ship "Of Course I Still Love You." According to a SpaceX mission description, it was the fourth flight for this particular booster, which is designated 1103.

The Falcon 9's upper stage continued hauling the 21 satellites to LEO. We don't know when or exactly where they'll be deployed; the SpaceX mission description doesn't provide that information, and the company cut off its launch webcast shortly after booster landing at the request of the SDA.

Editor's note: This story was updated at 4:44 p.m. ET on July 16 with news of successful launch and booster landing.

SpaceX's Starship megarocket will take to the skies again on Monday (July 20), and you can watch the thundering action live.

Starship, the biggest and most powerful rocket ever built, is scheduled to lift off from SpaceX's Starbase site in South Texas on Monday — the 57th anniversary of NASA's Apollo 11 moon landing, by the way — during a 90-minute widow that opens at 6:45 p.m. EDT (2245 GMT; 5:45 p.m. local Texas time). It will be Starship's 13th flight overall and its second mission of 2026. (SpaceX originally tried to launch Flight 13 on Thursday, July 16, but that attempt was aborted at the last second.)

You can watch Starship Flight 13 live here at Space.com, courtesy of SpaceX; coverage will begin about 30 minutes before liftoff. Follow our Starship live blog for updates and other news about the test flight.

A potentially revolutionary rocket

Starship consists of a first-stage booster called Super Heavy and an upper-stage vehicle known (somewhat confusingly) as Starship, or simply Ship. Both elements are made of stainless steel and are designed to be fully and rapidly reusable.

The stacked vehicle stands more than 400 feet (122 meters) tall and can carry more than 110 tons (100 metric tons) to Earth orbit. SpaceX thinks Starship's combination of power and reusability will revolutionize spaceflight, allowing humanity to settle the moon and Mars, among other bold exploration feats.

Starship debuted in April 2023 and has flown 11 more suborbital flights since, most recently on May 22. That Flight 12 test was the first mission for Starship Version 3 (V3), an advanced iteration of the megarocket that was many months in the making. (Flight 11, the last launch of Starship V2, lifted off in October 2025.)

Starship V3 will be the first operational variant of the vehicle. It will fly on NASA's Artemis III mission to Earth orbit in 2027, for example, and land the agency's Artemis IV astronauts on the moon a year later, if all goes to plan.

Starship V3 performed quite well during its launch debut in May. During Flight 12, Ship successfully deployed 22 payloads via its "PEZ dispenser" slit — 20 dummy versions of SpaceX's Starlink broadband satellites and two actual Starlinks equipped with imaging sensors — and came back to Earth in one piece, splashing down as planned off the coast of Western Australia.

There were a few hiccups, however. Super Heavy suffered engine issues during its return to Earth, for instance, and ended up crashing in the Gulf of Mexico rather than making a controlled splashdown there.

SpaceX will run it back on Flight 13, shooting mostly for the same objectives that Flight 12 targeted — with a few notable exceptions.

The plan for Starship Flight 13

Eventually, SpaceX plans to return both Super Heavy and Ship directly to the launch pad after liftoff, catching each with the "chopstick" arms attached to Starbase's two launch towers. (Starship will also fly from Florida and perhaps other places as well in the coming years; these future pads will have chopstick arms, too.) This strategy will allow each vehicle to fly multiple times per day, according to the company.

SpaceX has caught Super Heavy three times to date, but it's been a while; the last such snag came on Flight 8 in March 2025. And the company has never tried a chopsticks catch with Ship.

Those trends will continue on Flight 13. If all goes to plan, Super Heavy will steer its way to a controlled splashdown in the Gulf of Mexico (which the Trump administration has renamed the Gulf of America) about seven minutes after launch.

"The booster’s primary test objective will be executing a successful launch, ascent, stage separation, boostback burn and landing burn at an offshore landing point in the Gulf of America," SpaceX wrote in a Flight 13 mission description. "There have been several modifications to hardware and software to address issues seen on the previous flight."

Ship will again target a splashdown in the Indian Ocean off the coast of Western Australia, which will occur about 65 minutes after launch. And the vehicle will again deploy some objects into suborbital space — but here's where Flight 13 will break new ground.

Those objects will be 20 V3 Starlink satellites — next-gen versions of the broadband spacecraft, which will "greatly expand the network's capacity and user speeds," SpaceX wrote in the mission description.

Eventually, SpaceX wants to operate up to 100,000 V3 Starlinks in low Earth orbit — a bold plan, considering that the current megaconstellation, the largest such network ever assembled, contains "only" about 10,800 spacecraft.

The Starlink V3 plan will require thousands of launches — a load that's beyond even the capabilities of SpaceX's workhorse Falcon 9 rocket, which flew 165 times in 2025. (Adding to the difficulty: Starship V3 satellites are considerably heavier than their predecessors. Each one will apparently weigh around 4,400 pounds, or 2,000 kilograms.)

The 20 Starlink V3 satellites "will extend solar arrays and antennas and will attempt to connect with the larger Starlink constellation via high-capacity lasers," SpaceX wrote in the Flight 13 description. "The Starlink satellites will be on the same suborbital trajectory as Starship and are expected to demise upon reentry approximately 20 minutes after deployment."

Six of the 20 spacecraft are equipped with cameras, which they will use to scan and study Ship's heat-shield tiles. SpaceX wants to gather more data about the heat-shield system before it attempts to bring Ship back to the launch pad for a chopsticks catch.

And SpaceX won't just passively observe the heat shield during Flight 13; it will conduct some experiments as well.

For example, the shield "will have load-sensing tiles to take measurements as the vehicle experiences higher dynamic pressure on ascent than previous flights, putting added stress on the tile attachments in exchange for increased payload-to-orbit capability," the mission description reads.

So there will indeed be some new things to look out for during Flight 13. And watching the world's biggest and brawniest rocket lift off is a treat no matter what sort of mission it's flying, so be sure to tune in!

Editor's note: This story was updated at 1:25 p.m. ET on July 17 with the new target launch date of July 20.

NASA is picking up the pace on its Artemis III mission preparations, pressing forward on multiple fronts to assemble launch vehicle hardware and beginning routine simulations inside Artemis mission control.

The agency is "full steam ahead," according to a July 13 NASA update. Across Kennedy Space Center (KSC) in Florida, components of Artemis III's Space Launch System (SLS) rocket are coming together, undergoing tests and awaiting transportation for final integration ahead of next year's launch. NASA is targeting mid-to-late 2027 for Artemis III, which will launch four astronauts into low Earth orbit (LEO) aboard the Orion spacecraft. It will be the second crewed mission of NASA's Artemis program, which aims to establish a permanent human presence on the moon.

Artemis III will be a critical stepping stone in NASA's lunar landing architecture, despite the mission not actually flying to the moon. Instead, SLS will launch Orion and its four-person crew into LEO for rendezvous and docking operations with the program's two commercial lunar lander vehicles: SpaceX's Starship and Blue Origin's Blue Moon spacecraft.

With the completion of the massively successful Artemis II mission that flew astronauts around the moon in April and the second half of 2026 beginning to count down, NASA has shifted into full gear to complete assembly and testing of the hardware that will launch Artemis III.

Several components for the mission's SLS rocket have arrived in the Vehicle Assembly Building (VAB) at KSC. The SLS core stage was delivered at the end of April, and it was connected with the rocket's engine block section in May. The first two of the core stage's four RS-25 engines arrived in June and will be installed on the SLS engine block once the remaining two are delivered, after which NASA plans to begin integration with the mobile launch platform (MLP) and launch operations tests. A temporary weather cap was also delivered in June, which will protect the stage when NASA transports it to the launch pad for tests before the full vehicle is stacked.

The bottom segments of both SLS solid rocket boosters (SRBs) were delivered over the last week, and they have been mounted on the MLP, according to NASA's update. The upper SRB segments arrived at KSC via train in June and will undergo inspection and testing before the twin boosters are fully stacked.

Inside KSC's Neil Armstrong Operations and Checkout Building, the Artemis III Orion is making significant progress — engineers have now finished installation of the spacecraft's heat shield.

Artemis III will be the first Orion mission to use an upgraded heat shield, featuring design improvements gleaned from analysis of unexpected wear on the heat shield flown on Artemis I. Orion's service module is also currently inside the Operations and Checkout Building and recently completed acoustic testing. Both the service module and Orion capsule are now being prepared for joining and eventual transportation to the VAB for stacking.

On the personnel side of things, Artemis III team members at KSC have begun monthly launch simulation tests to hone procedures for SLS propellant loading, terminal count operations (the final 10 minutes prior to liftoff) and launch day operations. Those tests will continue regularly leading up to Artemis III's launch next year, according to NASA.

As teams across NASA are busy readying all the pieces for Artemis III, others are looking ahead to the program's first lunar landing, planned for Artemis IV. That mission, scheduled for late 2028, will deliver a crew of astronauts to the surface of the moon for the first time since 1972. The SLS that will get them there is also coming together piece by piece.

The liquid oxygen (LOX) tank for the Artemis IV SLS core stage was recently relocated within NASA's Michoud Assembly Facility in New Orleans, positioning the tank for testing as it enters its next phase of production.

Rocket Lab has completed a major qualification test for its formidable Archimedes engine, which will power the company's next-gen Neutron launch vehicle.

As Rocket Lab continues with regular launches of its workhorse small-lift Electron rocket, development of Neutron has carried on in the background, progressing toward a possible debut later this year. The company recently completed a full-duration burn of a second-stage Archimedes, paving the way for integration with Neutron in the coming months.

The burn took place at Rocket Lab's Archimedes Test Complex, housed at NASA’s Stennis Space Center in Mississippi. The full-duration test aimed to simulate flight-like requirements and lasted just under 5.5 minutes. "What a thing of beauty," the company said in a July 13 social media post announcing the success, calling it a "critical preparation for Neutron's first flight."

Neutron is equipped with eight Archimedes engines on its first stage, which together provide nearly 1.5 million pounds of thrust at liftoff. The output of each is comparable to that of each Merlin 1D engine, which powers the first stage of SpaceX's Falcon 9 rocket. Like the Falcon 9, Neutron is also designed for partial reusability: Its first stage will be capable of returning for landing back at its launch site or on droneship vehicles stationed at sea.

The vehicle's second stage, however, is unique compared to other rockets. Conventional launch vehicles secure their payloads inside protective fairings that fall away from the rocket completely once damaging aerodynamic forces disappear in the vacuum of space. But Neutron's fairing halves separate like a clam shell. Rocket Lab has dubbed the system the "Hungry Hippo," after the popular children's game.

Neutron's fairings are also unique in the way they house the rocket's second stage, which emerges from the open fairing jaws to provide its payload a final push into orbit. A single vacuum-optimized Archimedes (AVac) powers Neutron's second stage. It features an engine bell that stretches about eight feet (2.5 meters) taller than the rocket's first-stage engines and produces 1.2 times the thrust of its first-stage counterparts in a vacuum.

For the recent engine test, Rocket Lab installed a shorter sea-level variant skirt on the AVac to compensate for its grounded altitude, which can expose the full-length nozzle to "flow separation and instability," the company's post said. "Stub skirts are used to anchor our engineers' analysis for how the engine will perform with the full nozzle in vacuum conditions."

Rocket Lab had targeted late 2025 for Neutron's debut but pushed that date to the first half of 2026 as last calendar year was approaching its end with the rocket far from being ready for launch. Neutron's timeline suffered another blow in January, when the main stage tank ruptured during a pressure test taking place at the company's Wallops, Virginia, launch facility.

Setbacks aside, Rocket Lab founder and CEO Peter Beck has repeatedly voiced his stance that the Neutron team is focused on reaching orbit when the vehicle is ready, not meeting an arbitrary target date.

SpaceX's Starlink satellites made over 355,000 collision avoidance maneuvers throughout the past year, with each satellite now dodging debris and other spacecraft on an almost weekly basis.

The numbers are based on disclosures made by SpaceX in its latest semiannual report to the Federal Communications Commission (FCC). According to the latest report, Starlink satellites performed an overall 207,152 avoidance maneuvers between December 2025 and May 2026, up nearly 60,000 from the 148,696 reported in the previous half year. That brings the yearly total to over 355,000, more than three times as many as the constellation performed in 2024. On average, each Starlink satellite performed more than 40 space dodging maneuvers per year between June 1, 2025 and May 31, 2026.

Experts fear the situation might soon get out of hand. "I think we're heading towards a situation where there will be a collision involving an operational satellite in the constellation," Hugh Lewis, a space sustainability expert and professor of astronautics at the University of Birmingham in the U.K., told Space.com. "And it will not be for the lack of trying to avoid those things. It will be in spite of all those maneuvers."

The increase coincides with the growth of the internet-beaming constellation and the overall number of satellites in space in the past five years. Starlink grew from about 6,000 satellites in 2024 to more than 10,000 as of June 2026. Over the same time period, the overall number of operational spacecraft in orbit rose from around 10,000 to about 16,000.

The SpaceX constellation orbits at altitudes between 298 miles (480 km) and 342 miles (550 kilometers) and uses an autonomous collision avoidance system that initiates a maneuver when the probability of a collision appears higher than 3 in 10 million. Lewis says that although SpaceX is "doing an excellent job" managing orbital traffic, the steep growth cannot continue without risks.

"The avoidance maneuvers reduce the probability of a collision to about one in a million, which is so small that it's negligible," Lewis said. "The problem is that if you make a million maneuvers and you have a residual probability of one in a million, you end up with an aggregate risk across your entire constellation that you can't get rid of."

Lewis points out that with the expected continued rise in avoidance maneuvers (SpaceX has applied to the FCC to increase the size of its constellation to 100,000 satellites), SpaceX will have made a million avoidance maneuvers over the lifetime of the Starlink constellation as early as June 2027. By 2030, the constellation may be making more than a million maneuvers every year. At that point, the one in a million risk of a collision may no longer be negligible at all.

Tommaso Sgobba, the Director of the International Association for the Advancement of Space Safety, told Space.com that the increase in collision avoidance maneuvers is a predictable certainty.

"The more satellites you pack into [an orbital] shell, the more pairs of satellites exist that could potentially cross paths," Sgobba wrote in an email. "Adding satellites does not just add risk one unit at a time, it multiplies the number of possible pairings. Double the satellites in a shell and you roughly quadruple the number of pairs that need to be watched."

Sgobba also said that the collision probabilities predicted are highly inaccurate as the effects of air drag, which change frequently with space weather, are currently impossible to predict.

He said that due to the vast uncertainties in satellite trajectory predictions "operators lack tools to tell a real threat from statistical confusion," adding that "satellites are frequently dodging ghosts, burning fuel and shortening their operational lives in the process."

SpaceX, being the largest constellation currently in orbit, takes the bulk of responsibilities for orbital maneuvering. Instead of communicating with the other operator to decide who will make the dodge, Starlink satellites automatically avoid other objects — both space debris fragments or operational satellites — whenever there is a conjunction alert.

Other ambitious constellations, such as Amazon LEO or China's Thousand Sails, or Qianfan, are currently being deployed, actively adding to the high number of satellites operating in low Earth orbit.

Lewis said that the only way to safely manage multiple constellations is to make sure their orbits do not intersect. That, however, is not the case based on available information. The Thousand Sails constellation, in particular, is expected to occupy similar regions as Starlink. Many of the recently announced orbital data center projects want to launch into particular orbital regions that are convenient for their operations and are therefore likely to overlap.

"The safe thing to do is to separate the constellations," Lewis said. "But then you are talking about orbital carrying capacity and the first mover benefit, because if I go into a particular altitude with my constellation, then nobody else can use it."

Sgobba calls for predicted numbers of collision avoidance maneuvers based on satellite numbers to be mandatorily disclosed to regulators before applications are granted.

"Right now, there is no clear requirement for a company to say, before launch, how many collision avoidance maneuvers a constellation of this size and density will need every year and whether the satellites carry enough fuel and automation to actually perform them all," Sgobba wrote.

"In short, the crowding of orbit is not an accident waiting to happen. It is a manageable, predictable engineering workload and the argument worth making publicly is that regulators should be treating it that way, by asking for these numbers up front rather than reacting to headlines about near misses after the fact."

SpaceX is just a few days away from its first Starship test flight of the summer, and if you're hoping to watch the world's largest rocket lift off, you'll need to know where and when to tune in. But don't worry — we've got you covered.

The next Starship test flight, called Flight 13 (SpaceX doesn't appear to be superstitious), is scheduled to launch from the company's test site in Starbase, Texas near Boca Chica Beach on Monday, July 20. Liftoff is set for 6:45 p.m. EDT (2245 GMT).

As its name suggests, the upcoming flight will be the 13th test launch overall of SpaceX's Starship megarocket. It will be the second such flight this year, after the May 22 launch of Starship Flight 12. SpaceX is designing Starship, which stands more than 400 feet (121 meters) tall, to be a fully reusable rocket capable of launching missions to the moon, Mars or beyond.

NASA picked Starship to land its Artemis IV astronauts on the moon by 2028, and SpaceX has sold at least one Starship passenger flight to Mars as well. But before SpaceX can carry astronauts to other worlds with Starship, it has to complete a series of suborbital flights and, eventually, reach Earth orbit for in-flight fueling tests, docking demonstrations and more.

SpaceX's Starship Flight 13 is a suborbital test that will be the second flight of SpaceX's new V3 Starship. Below you'll find details on what time Flight 13 will launch, what the mission will do and a full timeline for the mission.

What time is SpaceX's Starship Flight 13 launch?

SpaceX is currently targeting the launch of Starship Flight 13 for no earlier than 6:45 p.m. EDT (2245 GMT) on Monday, July 20. (The company originally tried to lift off on Thursday, July 16, but that attempt was aborted at the last second.) However, the exact timing of the launch could change.

That's because SpaceX has a 90-minute window in which to launch Flight 13 from Starbase Pad 2. Liftoff could occur anytime between 6:45 p.m. and 8:15 p.m. EDT (2245 to 0015 GMT). SpaceX's launch webcast will begin 30 minutes before liftoff.

And remember, SpaceX likely has backup days, so the launch could slip a bit if needed. In that case, it would likely lift off at the same time — 6:45 p.m. EDT — and have a 90-minute window, as on the coming attempt.

Related: Read our SpaceX Starship and Super Heavy guide for a detailed look

Can I watch SpaceX's Starship Flight 13 launch?

Yes, you'll be able to watch SpaceX's Starship Flight 13 launch online, but you'll have your pick on where to watch.

SpaceX will provide its own livestream of the launch via its X account and the official Flight 13 mission page. If everything is on time, that livestream will begin at 6:15 p.m. EDT (2215 GMT) — 30 minutes before the planned Flight 13 liftoff.

Space.com will simulcast the SpaceX Flight 13 launch webcast on this page, as well as an our homepage and YouTube channel.

A prelaunch show

Now, if you need to get your Starship Flight 13 fix earlier than SpaceX's stream, a good place to look is the NASASpaceflight show: Its livestream will start several hours before liftoff.

The NASASpaceflight launch webcast will begin on July 20 at 3:45 p.m. EDT (1945 GMT). NASASpaceflight has a wealth of cameras installed around SpaceX's Starbase test facility, and the company will share up-close views and live commentary for many preflight activities.

In-person launch options

While SpaceX does not have an official Starship launch viewing site, there are several places where you can see the launch in person around the Starbase area.

For first-time spectators, I recommend watching Starship launch from near the Cameron County Amphitheater at Isla Blanca Park on South Padre Island, which is just across the bay from Starbase. The rocky beaches around the amphitheater offer a clear line of sight of the Starship launch pad, and there are often spectators on boats out of nearby Port Isabel offering a picturesque view. It's about 5 miles (8 kilometers) from the launch site, and the park has bathrooms.

The traffic getting to South Padre Island (if you're not staying at a hotel on the island) can be heavy on launch days, so another option is watching from the shore in Port Isabel, which is home to Hopper Haus, a SpaceX-themed bar and grill that I can confirm makes awesome burgers.

There is also a shoreline stretch of Highway 48 between Brownsville and Port Isabel, from 6 to 8 miles (10 to 13 km) from the launch site, where you can pull up for the day to watch the launch. It's just the side of the highway, so you won't find amenities like bathrooms there. You can learn more about that at the site SpaceLaunchSchedule.com.

If you're looking for a more rustic experience (and have cash for a $200 ticket, though kids under 17 are $40), you can camp at the Rocket Ranch, which is 3.8 miles (6.1 km) from the Starbase launch site, and camp there for one day and night. It has two viewing locations available, one at an "Outpost" and the other on the campground itself. The Outpost location is the closest and has "unmatched media service," so you can stay connected. Larger four-day camping packages are also available. The ticket includes bus transportation from the ranch campground to a viewing site and back for one launch attempt. I've actually never visited this ranch, but I wanted to include it so you know it's an option. Be sure to read the full Rocket Ranch FAQ so you know what to expect.

How long is SpaceX's Starship Flight 13?

SpaceX's Starship Flight 13 test flight will last just over 1 hour and 5 minutes and should follow the same mission profile as the company's last test, Flight 12, in May. This will be the second flight of SpaceX's new Starship Version 3, or V3.

During Flight 12, the giant Super Heavy booster stage failed to return to Earth properly for a controlled landing and splashdown in the Gulf of Mexico (which the Trump Administration has renamed the Gulf of America). Instead, the booster crashed into the ocean.

"The booster’s primary test objective will be executing a successful launch, ascent, stage separation, boostback burn, and landing burn at an offshore landing point in the Gulf of America," SpaceX wrote in a mission overview. "There have been several modifications to hardware and software to address issues seen on the previous flight."

Starship Flight 13 will launch from SpaceX's new Pad 2 at Starbase, which the company upgraded with shorter, faster "chopsticks" — capture arms that can catch returning Starship Super Heavy boosters and Ship upper stages during landing, as well as lift vehicles into place on the pad for launch. Check out our full overview on how SpaceX changed Starship for V3 here.

SpaceX will not try to reach orbit with Starship Flight 13 or return its Ship back to Earth for a capture at the launch pad. Instead, both vehicles aim to make controlled descent and water landings, before falling over and sliding into the sea.

While the Super Heavy booster will splash down in the Gulf of Mexico off the coast of Boca Chica, the Ship upper stage will follow a suborbital trajectory for a target splashdown in the Indian Ocean off the coast of Western Australia.

During the flight, the Ship vehicle will attempt to deploy 20 Starlink V3 satellites, the company's newer and larger satellite-internet units, but they won't reach orbit. They will follow Starship's suborbital trajectory back down to Earth and burn up in the atmosphere.

Six of the Starlink V3 satellites are equipped with cameras to record live views of Starship and its heat shield and beam them back to Earth for analysis.

"For the first time, Starship will carry V3 Starlink satellites to space, which aim to greatly expand the network's capacity and user speeds. As part of this initial test, Starship is planned to deploy 20 satellites which will extend solar arrays and antennas and will attempt to connect with the larger Starlink constellation via high-capacity lasers," SpaceX wrote in the mission overview. "The Starlink satellites will be on the same suborbital trajectory as Starship and are expected to demise upon reentry approximately 20 minutes after deployment."

What if Starship Flight 13 can't launch?

If SpaceX can't launch Starship Flight 13 on July 20, the company likely has multiple backup opportunities. So, if bad weather or another technical issue delays launch, SpaceX could try again in the coming days.

Whichever date SpaceX launches Starship Flight 13, you will be able to follow the mission on Space.com. Be sure to return to Space.com on launch day for complete Starship Flight 13 coverage.

Editor's note: This story was updated at 1:15 p.m. ET on July 17 with the new target launch date of July 20.

SpaceX reached a milestone with its latest Starlink launch, sending the satellites into orbit on its 600th flight of a flight-proven booster.

The sexacentennial launch came on the second of two Falcon 9 missions that lifted off less than eight hours apart overnight from Monday to Tuesday (July 13 to July 14). The first flight, with Starlink batch 15-14, launched at 9:28 p.m. EDT (0128 GMT or 6:28 p.m. PDT local time) from Space Launch Complex 4 East at Vandenberg Space Force Base in California.

The second flight, with Starlink group 10-45, followed at 5:10 a.m. EDT (0910 GMT) from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida.

Both launches successfully deployed their payloads — 27 and 29 Starlink satellites, respectively — into their intended orbits, as confirmed by SpaceX.

Both flights also successfully recovered their Falcon 9 first stage boosters. B1093, launched from Florida, completed its 15th flight. B1080, launched from California, achieved its 28th mission. The record for a single Falcon 9 first stage's re-flight stands at 36 launches.

The addition of 56 more Starlink satellites to SpaceX's megaconstellation brought the total active number of broadband internet relay units to 10,839, according to tracker Jonathan McDowell.

In addition to Tuesday's launch being the 600th launch of a flight-proven Falcon 9 stage, SpaceX now stands at 83 Falcon 9 missions this year to date.

SpaceX's next Starship test flight aims to achieve a major milestone by deploying 20 upgraded Starlink satellites, marking the first Starlink Version 3s to deploy in space..

Liftoff for the spacecraft’s upcoming 13th test flight was originally scheduled for Wednesday (July 16) from the company's Starbase facility in South Texas. That attempt was aborted at the last second, however; SpaceX is now targeting Monday (July 20), during a 90-minute window that opens at 6:45 p.m. EDT (2245 GMT; 5:45 p.m. local Texas time).

You can watch the launch live on Space.com, courtesy of SpaceX, beginning 30 minutes before liftoff. Follow our Starship live blog for more mission updates.

The mission follows a nearly two-month pause after Flight 12 ended with the loss of the Super Heavy booster during its return to the Gulf after stage separation. After reviewing the anomaly and SpaceX's corrective actions, the Federal Aviation Administration cleared the company to resume Starship launches.

“The upcoming flight will aim to complete similar objectives targeted on the previous flight test, which debuted the Starship and Super Heavy V3 vehicles, while also carrying next-generation Starlink V3 satellites for the first time,” SpaceX officials said in a statement announcing the test flight.

As with previous flights, Flight 13's primary goal is to gather engineering data while testing upgrades to the world's most powerful rocket. Here's what to watch for:

The mission will begin with all 33 Raptor 3 engines igniting on the Super Heavy booster, generating up to 18 million pounds (about 8,200 metric tons) of thrust at liftoff. About 2.5 minutes later, the booster will separate from the Starship upper stage and begin its return toward the Gulf of Mexico for a controlled splashdown rather than a launch tower catch. SpaceX is continuing to refine its booster recovery procedures following Flight 12's landing burn failure.

One of Flight 13's biggest milestones will come after stage separation, when Starship is expected to deploy 20 Starlink V3 satellites for the first time. The satellites are designed to test Starship's payload deployment capabilities and will intentionally reenter Earth's atmosphere after completing the demonstration rather than remain in orbit.

The flight will also continue testing SpaceX's upgraded Starship vehicle, including improvements to its propulsion system, avionics and overall performance. Engineers will closely monitor the rocket throughout ascent to evaluate how the latest design performs under flight conditions.

After completing its satellite deployment, Starship will continue along a suborbital trajectory before reentering Earth's atmosphere over the Indian Ocean. The spacecraft's descent will provide additional data on its heat shield, flight controls and guidance systems before ending with a planned splashdown roughly an hour after launch.

While Flight 13 remains another developmental mission, it represents an important step toward making Starship an operational launch vehicle. Successfully deploying Starlink satellites would demonstrate the rocket's ability to begin carrying real payloads while continuing to advance SpaceX's goal of building a fully reusable system for missions to Earth orbit, the moon and eventually Mars.

Editor's note: This story was updated at 1:15 p.m. ET on July 17 with the new target launch date of July 20.

SpaceX's massive Starship, the world's largest and most powerful rocket, was scheduled to launch its critical test flight on Thursday, July 16, at 6:45 p.m. EDT (2245 GMT) from Starbase, Texas. The mission was scrubbed at the very end of the countdown. SpaceX is now targeting July 20 for Starship Flight 13.

You can see our latest updates on the Starship V3 (short for Version 3) rocket, including its test flight goals, system upgrades and more. Flight 13 is the 13th test launch of the Starship vehicle since 2023.

Launch livestream | Starship V3 upgrades explained | SpaceX

SpaceX targeting July 16 for Starship Flight 13

The next Starship launch has arrived!

SpaceX is targeting no earlier than July 16 for the next launch of its massive Starship rocket, the company announced on in a post on X. Flight 13 will be the second launch of the vehicle's Version 3 configuration and will be similar in profile to Flight 12. It will be the second launch for Starship "Version 3" (V3), a bigger, more powerful upgrade from previous Starship designs, and will come a little less than two months after V3's debut.

A 90-minute launch window will begin on Thursday at 6:45 p.m. EDT (2245 GMT). A livestream of the mission will begin about 30 minutes prior to liftoff and stream on the company's mission page, profile on X and here on Space.com.

Full story: SpaceX targets July 16 for Starship Flight 13, reveals what went wrong on previous launch

Super Heavy booster moved back to hangar

Following a static fire engine test last Friday (July 10), SpaceX has lowered the Flight 13 Super Heavy, Booster 20, from the launch stand and transported the stage back to its hangar at the company's Starbase, Texas, facility.

The booster will roll back to the pad in the next day or so, along with Ship 40, the Flight 13 Starship upper stage. The pair will be stacked a Starbase's pad 2, where it's expected the rocket will undergo at least one additional engine test prior to launch.

SpaceX is still targeting July 16 for liftoff of Starship's 13th test flight, scheduled to get off the ground during a 90-minute window that opens at 6:45 p.m. EDT (2245 GMT).

Read how this launch will deploy SpaceX's first batch up upgraded Starlink Version 3 satellites into space.

How to watch SpaceX launch Starship Flight 13 on July 16

SpaceX readying Starship to launch in just over 24 hours

Starship's next big test launch is just a day away.

SpaceX has transported Booster 20, the Super Heavy first stage for the massive launch vehicle, back to pad 2 at the company's Starbase facility in Texas. If all goes according to plan, that will be its last relocation before launch, currently scheduled for tomorrow (July 15) during a 90-minute launch window beginning at 6:45 p.m. EDT (2245 GMT).

Ship 40, Starship's upper stage for Flight 13, will be trasnported to the pad today, and stacked on Super Heavy for a full wet dress rehearsal to confirm the vehicle's readiness ahead of tomorrow's launch attempt.

What time is SpaceX's Starship Flight 13 launch on July 16? (Full mission timeline)

Starship stacked, awaiting launch countdown

SpaceX's massive Starship rocket is stacked and ready for this evening's Flight 13 launch. Booster 20, the Super Heavy vehicle supporting the mission, was rolled back to Starbase's pad 2 yesterday, with the upper stage Ship 40 joining the booster overnight, when the two were stacked for (hopefully) the final time before liftoff.

SpaceX is progressing toward a 90-minute launch window that opens today (July 16) at 6:45 p.m. EDT (2245 GMT). The mission can be streamed live here on Space.com, or directly via SpaceX on the Flight 13 website and the company's X account. Read our full mission breakdown for a complete mission profile:

SpaceX will launch Starship, the world's largest rocket, on critical Flight 13 test today. Here's what to expect.

SpaceX stacks Starship overnight (video)

SpaceX has released photos and video of last night's Starship stacking. Super Heavy 20 was rolled back to pad 2 yesterday (July 15), with Ship 40 following its trail after sunset. Both recently completed static test fires of the Raptor 3 engines, followed by final prelaunch checkouts back at their respective hangars.

Now that both have been transported to the launch pad and stacked, SpaceX is preparing the rocket and ground infrastructure for liftoff.

The Flight 13 launch window opens at 6:45 p.m. EDT (2245 GMT), and will last for up to 90 minutes.

Starship Flight 13 on track for launch

SpaceX is moving ahead today with Starship Flight 13, according to a post on the company's social media page. Beach and road closures around Starbase close to the public this afternoon around 1:30 p.m. EDT (1730 GMT), clearing all but essential personnel from the surrounding facility.

A 90-minute launch window will open at 6:45 p.m. EDT (2245 GMT), with several opportunities for teams to reset if liftoff doesn't occur at the top of the window. SpaceX's livestream is expected to begin about 30 minutes before launch, and will be simulcast here on Space.com.

SpaceX stacks massive Starship rocket ahead of today's Flight 13 test launch (video)

SpaceX Straship Flight 13 launch stream is live

Live coverage has begun for SpaceX's Starship Flight 13! You can watch the action and follow along with live updates here, and on the Space.com homepage. SpaceX's direct stream is available on the company's website.

Liftoff is currently set for 6:45 p.m. EDT (2245 GMT), with a launch window that extends to 8:15 p.m. EDT (0015 GMT, July 17).

Super Heavy booster propellant load had begun

SpaceX has begun loading cryogenic fuel into the Super Heavy booster at Starbase's pad 2. Starship uses a mixture of liquid methane and liquix oxygen, together known as "methalox," to power both Super Heavy and Ship stages of Starship.

SpaceX not tracking any issues

SpaceX is fueling Starship for Flight 13 right now, and is not tracking any issues as the opening of the launch window approaches. The day began with a 90% probability of favorable launch conditions, according the SpaceX livestream host Dan Huot, who is voicing confidence in the success of today's mission.

According to SpaceX commentators, success on today's mission will open the door for "near future orbital flights" and the first-ever attempt to catch Starship's Ship upper stage using the launch tower at Starbase's pad 2.

Barring any delays in fueling or weather constraints, Starship is scheduled to lift off at 6:45 p.m. EDT (2245 GMT). The launch window extends for 90 minutes.

T-1 minute to launch!

SpaceX has entered the terminal count for Starship! Just one minute to go until Starship Flight 13 liftoff! Let's go!

SCRUB

SpaceX's Starship Flight 13 is scrubbed for the day.

At T-0, the rocket's automated flight computer initiated a hold and abort call. It isn't immediately clear what caused the abort, but its execution so far into the countdown means a scrub for the day. "We did trigger a hold on the booster that aborted our liftoff as we were starting to light those Raptor engines," SpaceX livestream host Dan Huot said.

"At this point," Huot said as the coverage ended, "they're going to get into [propellant] offload. We're gonna get all the methane, all the oxygen off the vehicle, and then we'll figure out next steps."

A new launch date for Starship Flight 13 has not been determined.

SpaceX assessing new launch date

Following the last-second scrub of last night's Starship Flight 13 launch, SpaceX stood down from Thursday's launch attempt.

It was not immediately clear what caused the automated abort, but SpaceX CEO Elon Musk posted to social media shortly after the launch was called off, saying a failure of a few of Straship's Raptor 3 engines failed to light at ignition. "Next launch attempt hopefully in a few days," Musk said in a post.

He clarified later yesterday evening, saying, "To be confident of a good flight, 2 Raptors will be removed & replaced. Most probable launch timing is early next week."

SpaceX's Starship Flight 13 test launch aborts at last second (video)

SpaceX targeting July 20 for Starship Flight 13 test launch

We have a new (tentative) launch date: After a last-second abort scuttled SpaceX's first attempt to launch Starship Flight 13 yesterday (July 17), the company is now targeting no earlier than Monday (July 20) for the liftoff. The 90-minute launch window opens at 6:45 p.m. EDT (2245 GMT; 5:45 p.m. local time).

You can watch the launch here at Space.com when the time comes and learn about the mission in our Flight 13 preview.

Yesterday's abort was triggered when several of the 33 Raptor engines on Starship's first-stage booster failed to ignite as planned, according to SpaceX founder and CEO Elon Musk. "To be confident of a good flight, 2 Raptors will be removed & replaced," Musk said via X, the social media platform he owns, shortly after yesterday's abort.

July 20 is a very meaningful date in spaceflight history, by the way. Apollo 11 landed on the moon on July 20, 1969, and NASA's robotic Viking 1 lander touched down on Mars exactly seven years later.

The International Space Station has three new residents.

NASA's Anil Menon and cosmonauts Pyotr Dubrov and Anna Kikina lifted off atop a Russian Soyuz rocket from Baikonur Cosmodrome in Kazakhstan at 10:47 a.m. EDT (1447 GMT; 7:47 p.m. local time in Baikonur), heading toward the orbiting lab.

Their Soyuz executed nominal side booster separation about two minutes after launch, followed by second stage separation about 2.5 minutes later, as the rocket flew at 105 miles (169 kilometers) in altitude. Third stage orbital insertion and separation was completed at about 8 minutes and 46 seconds, putting Russia's Soyuz MS-29 spacecraft and crew on course to chase down the International Space Station (ISS).

The trio caught up to the ISS after just two orbits, docking with the outpost at 1:52 p.m. EDT (1752 GMT). The two spacecraft were flying 260 miles (418 kilometers) above the Mediterranean Sea at the time, NASA officials said during the agency's docking webcast.

That webcast will resume at 3:30 p.m. EDT (1930 GMT) ahead of the opening of the hatches between the Soyuz and the ISS, which is expected around 3:55 p.m. EDT (1955 GMT).

The MS-29 trio will join the seven astronauts already living aboard the ISS — NASA's Jessica Meir, Jack Hathaway, and Chris Williams, the European Space Agency's Sophie Adenot, and Sergey Kud-Sverchkov, Sergei Mikaev, and Andrey Fedyaev of the Russian space agency Roscosmos.

This is the first spaceflight for Menon, who was selected as a NASA astronaut candidate in December 2021, in the agency's Group 23. He's married to Anna Menon, who was picked in the next astronaut candidate class, Group 24, in September 2025.

Anna Menon has already been to space, though not with NASA. In September 2024, while an employee of SpaceX, she flew on the company's Polaris Dawn mission to Earth orbit. That five-day flight, which was funded and commanded by current NASA Administrator Jared Isaacman, featured the first-ever commercial spacewalk and reached a maximum altitude of 870 miles (1,400.7 kilometers) — higher than any previous crewed Earth-orbiting mission had gotten.

Anil Menon is a former SpaceX-er as well; he was the company's first-ever flight surgeon.

MS-29's flight is the second-ever space mission for both Dubrov and Kikina. Dubrov lived aboard the ISS from April 2021 to March 2022, and Kikina spent five months on the outpost, from October 2022 to March 2023.

Kikina, the only female member of Russia's active astronaut corps, flew to and from the ISS back then on SpaceX's Crew-5 mission. That was a big deal: She was the first Russian ever to fly on a private U.S. spacecraft, and the first cosmonaut to fly on any American space vehicle since December 2002, when cosmonauts Valery Korzun and Sergey Treshchov came back to Earth from the ISS aboard the space shuttle Endeavour.

The MS-29 trio will spend about eight months living and working on the orbiting lab. Menon will help conduct a wide variety of scientific experiments during that stretch.

"He will continue research to refine in-space production of semiconductor crystals to enable the large-scale manufacturing of components needed for high-performance computers, artificial intelligence, and improved medical devices," NASA officials wrote in a July 9 media advisory.

"Menon also will perform ultrasound using augmented reality and artificial intelligence methods that could eliminate the need for medical support from Earth on future space missions," they added.

Editor's note: This story was updated at 1:55 p.m. ET with news of successful docking.

The assembly of NASA's next Artemis rocket is well underway, with the recent arrival of one of the launch vehicle's solid fuel booster sections to the agency's integration facility at Kennedy Space Center in Florida.

The bottom segment of the left-hand solid rocket booster (SRB) that will help launch Artemis III was transported to KSC's Vehicle Assembly Building (VAB) this week, according to a NASA social media post. It's one of two SRBs that will be affixed to either side of NASA's Space Launch System (SLS) rocket, which together provide a combined 7.2 million pounds of force — more than 75% of the rocket's power at liftoff.

"Soon, assembly of the rocket will begin as we prepare to send crew aboard Orion to test the rendezvous and docking capabilities needed for future lunar landings," the NASA post said.

It took about one year for NASA to stack the Artemis II SLS once each of the rocket's components were delivered to the VAB. The same timeline gives Artemis III a small amount of wiggle room, as it progresses toward a targeted launch in mid-to-late 2027 — and stacking of the entire rocket may not begin immediately.

The Artemis III SLS core stage arrived in the VAB in May. Unlike the core stage's arrival for Artemis II, Artemis III's was delivered without the engine section. Once that's attached, it may be some time before other components are stacked onto the main vehicle. NASA Administrator Jared Isaacman has said that the agency aims to complete a wet dress rehearsal on the rocket before the end of the year. In the meantime, other SLS components and SRB segments will continue arriving at the VAB.

Each SRB stands about 177 feet (54 meters) tall. They're packed with polybutadiene acrylonitrile (PBAN), ammonium perchlorate, and aluminum powder, which bring their combined weight to 3.2 million pounds (1.45 million kg). Unlike liquid-fueled rocket engines, once the SRBs' solid propellants ignite, they cannot be turned off. Without them, the four RS-25 engines on SLS's core stage would not be powerful enough to lift the rocket off the launch pad.

Artemis III will be the second crewed mission of the Artemis program — NASA's next-generation push to return astronauts to the moon. And, while Artemis III itself won't actually fly to the moon, it will help progress the hardware and spacecraft technologies the space agency needs to ensure success on future missions to the lunar surface.

Like Artemis II, which flew four astronauts on a 10-day mission around the moon in April, the Artemis III astronauts will launch on SLS aboard the Orion spacecraft — but they won't fly beyond low Earth orbit this time. Instead, the four-person crew will spend about two weeks testing out rendezvous and docking procedures with prototypes for the two Artemis moon landers, both of which have been privately contracted by NASA.

The space agency has partnered with SpaceX and Blue Origin for those vehicles, each of which is expected to launch once the Artemis III crew are on orbit. They'll first meet up with Blue Origin's lander, Blue Moon. After docking, the astronauts will have the opportunity to enter Blue Moon's crew cabin, where they will also have the chance to test parts of the Artemis extravehicular activity (EVA) suit designed for astronauts to wear on the lunar surface.

A rendezvous with SpaceX's Starship will follow Orion's stint with Blue Moon. SpaceX has indicated it will fly a boilerplate Starship V3 (Version 3) vehicle equipped with a docking adapter, but it will not have a crew cabin. V3 is SpaceX's newest version of Starship, which has been upgraded for high launch efficiency and capacity, but it will lack a fully developed life support system in time for the Artemis III launch next year.

If all goes according to plan and NASA is able to maintain its current mission timeline, the first moon landing of the Artemis program will take place on Artemis IV, scheduled to launch in late 2028.

SpaceX is targeting this week for the next launch of its massive Starship vehicle.

Following engine tests on both Starship stages in the last two weeks — igniting all six Raptor 3s on the "Ship" upper stage and all 33 Raptor 3s on the "Super Heavy" first stage — SpaceX is proceeding with the launch of Starship Flight 13, which is scheduled for no earlier than Thursday (July 16), according to a July 11 SpaceX social media post.

It will be the second launch for Starship "Version 3" (V3), a bigger, more powerful upgrade from previous Starship designs, and will come a little less than two months after V3's debut on Flight 12. To validate those upgrades, SpaceX didn't add any major objectives to Starship Flight 12 that hadn't already been proven on the spacecraft's previous V2 configuration. But the new design didn't quite check all the necessary boxes last time around, so Flight 13 will largely attempt an improved outcome of the same mission.

Though still in its development phase, Starship is designed for full reusability. Unlike SpaceX's Falcon 9 first-stage booster, which is equipped with legs capable of touching the rocket down on coastal landing zones or one of the company's droneships at sea, both Ship and Super Heavy are designed for a return directly to the launch site, where chopstick-like arms on the "Mechazilla" tower catch the stages out of mid-air.

SpaceX has yet to attempt such a recovery with Ship but has succeeded in doing so with Super Heavy three times so far. Two of those caught boosters were then reflown on subsequent launches. When flying the new V3 hardware during Flight 12, though, SpaceX opted for Super Heavy to perform a soft splashdown in the Gulf of Mexico, rather than risk launch pad infrastructure on an unproven vehicle, but Super Heavy didn't make it to the planned touchdown zone.

According to a new SpaceX analysis, a sequence change in Ship's engines, which ignite before the two rocket halves physically detach in a maneuver known as "hot staging," led to a 90-degree error in Super Heavy's orientation after separation. Super Heavy's boostback burn was also cut short when five of its 33 engines failed to relight. SpaceX says it has introduced a modified startup sequence for Ship and hardware updates to Super Heavy to address the orientation anomaly and ignition issues, respectively, "along with updates to engine alarms and aborts to match the conditions seen in the multi-engine flight environment."

Ship ran into a bit of trouble during Flight 12 but also managed to pull off some firsts. One of the spacecraft's three vacuum-optimized Raptors was lost 40 seconds after stage separation, but it still reached its designated suborbital trajectory, demonstrating its "engine out" capabilities, according to the SpaceX update. The loss did, however, prevent Ship's in-space engine relight attempt. SpaceX traced the failure to "interconnected causes" and has introduced a number of fixes for the upcoming Flight 13, "with additional reliability improvements planned in upcoming versions of the Raptor engine."

Flight 12 also featured the first deployment of two of SpaceX's Starlink internet satellites equipped with cameras for inspecting Ship's heatshield tiles and exterior conditions while in space. They were deployed with several Starlink V3 mass simulators, a payload that's getting an upgrade of its own for Flight 13.

Stowed inside Ship's payload bay for Flight 13 are the first functional Starlink V3 satellites that Starship will deliver to space. SpaceX plans to eventually launch perhaps 100,000 of the upgraded version of its internet satellite constellation spacecraft, which it says will increase the capacity and speed of its wireless network services. SpaceX is including 20 Starlink V3 satellites aboard Flight 13, which will be released for functionality testing while in space. Six of those will be outfitted with cameras for the same type of heatshield inspection performed during Flight 12. Ultimately, due to Starship's suborbital trajectory on this launch, all of these satellites are expected to burn up in Earth's atmosphere about 20 minutes after they are deployed.

For Flight 13, Super Heavy's main objectives will be the successful launch and separation from the Ship upper stage, a complete boostback burn and a soft splashdown in the Gulf of Mexico. In addition to the deployment of Ship's 20 Starlink V3 payloads, SpaceX is also planning the in-space relight of one of the spacecraft's Raptor engines, followed by the successful descent and soft splashdown of the stage in the Indian Ocean.

The Federal Aviation Administration (FAA) announced the closure of its investigation into SpaceX's Flight 12 mishaps this morning (July 13), approving the compnay's corrective actions and clearing the way for Flight 13.

SpaceX is targeting the launch of Flight 13 during a 90-minute window beginning on Thursday at 6:45 p.m. EDT (2245 GMT). A livestream of the mission will begin about 30 minutes prior to liftoff and stream on the company's mission page, profile on X and here on Space.com.

If everything goes smoothly, it's very likely that SpaceX will attempt the first Starship V3 recovery back at its Starbase, Texas, launch site for either Super Heavy or both stages on the following mission, Flight 14, but there are a number of other technical achievements Starship has left on its checklist before the vehicle can become fully operational. Those include launching into a stable orbit, demonstrating successful rendezvous and docking with other spacecraft, and conquering the technological hurdle of transferring and maintaining cryogenic fuels for long-term use in zero-g.

SpaceX is hoping to accomplish all that within the year — quite a tight timeline. NASA has contracted Starship as one of two lunar lander vehicles to deliver astronauts to the surface of the moon on the agency's Artemis program missions and is expecting a crew-capable version to be ready by 2028 for Artemis IV. The company plans to fly a boilerplate Starship V3 equipped with a docking adapter for NASA's Artemis III mission in 2027, which will launch astronauts aboard an Orion spacecraft for rendezvous operations demonstrations with Starship, as well as Blue Origin's Blue Moon lander, in low Earth orbit.

HYDERABAD, India — When Space.com visited Skyroot Aerospace's Max-Q campus here in February, the company's first orbital rocket, Vikram-1, was still coming together.

Inside the company's 55,000-square-foot (5,110 square meters) rocket factory, engineers sat before computer screens, running critical simulations and systems checks on Vikram-1's Orbit Adjustment Module, the liquid-fueled upper stage that stands at the center of the room and will guide the rocket's final maneuvers in space. Unlike the rocket's three solid-fueled lower stages, the upper stage can restart its engine, allowing Vikram-1 to deploy multiple customer satellites into different orbits during a single mission.

At the time, it was one of the last major components awaiting an overnight transport to the Satish Dhawan Space Centre in Sriharikota, where the rocket's lower stages had already arrived for final integration.

Five months later, the fully assembled, seven-story rocket stands on the coastal launch pad, monitored by a launch team of about 200 people — roughly one-fifth of Skyroot's workforce — preparing for a launch window that opened on July 12 and runs through Aug. 4. (The company has not yet announced a firm target date.)

If all goes as planned, Vikram-1's mission, named Aagaman — Sanskrit for "arrival" — will place multiple customer payloads into low Earth orbit, at an altitude of 280 miles (450 kilometers). Success would be historic: No private Indian company has ever launched a satellite to orbit.

The manifest includes Skyroot's SCOPE satellite; a technology demonstration from the German company DCUBED; Indian startup Grahaa Space's SOLARAS S3 satellite; and Embrace, a robotic arm designed to capture debris in orbit, from fellow Indian company Cosmoserve Space.

Vikram-1 will also carry two symbolic payloads — a floral-shaped artwork called Cosmic Bloom from the lab-grown-jewelry company Cosmos Diamonds, and a miniature 18-karat gold rocket by artist Ajay Kumar Mattewada that honors Indian scientific pioneers Vikram Sarabhai (after whom the Vikram rocket series is named), C.V. Raman and A.P.J. Abdul Kalam.

A successful mission would also move Skyroot closer to its goal of offering dedicated launches for small satellites that require precise orbital destinations. Rather than flying as secondary payloads aboard larger rockets, customers would be able to purchase missions tailored to their own orbital requirements — a model most successfully employed these days by the California-based company Rocket Lab.

Skyroot co-founder and CEO Pawan Kumar Chandana likens the strategy to booking a cab rather than taking a train.

"The 'cab' market is what we want to put our mark on with the Vikram series," Chandana told Space.com. "There are very few opportunities for customers to reach customized orbits today."

Aagaman is the first of three planned development flights intended to validate Vikram-1 before Skyroot begins commercial operations. If the vehicle performs as expected, the company hopes to scale production to one orbital rocket a month from its two Hyderabad campuses, according to Chandana.

"The whole idea is to go there as prepared as possible and to attain as much data as possible from the launch, so that we can get to fast-paced, high-frequency launches as soon as possible," he said.

Skyroot first drew headlines in 2022, when its Vikram-S vehicle became the first privately developed Indian rocket to reach space.

The vehicle was a suborbital technology demonstrator, climbing to an altitude of roughly 54 miles (88 km) before falling back to Earth. (That's above the boundary of space according to some, but not all, metrics.) According to Chandana, about 80% of the technologies now flying on Vikram-1 — including its carbon-composite structures, solid propulsion system, avionics and thermal protection materials — were first validated during that mission.

Even so, developing a rocket capable of reaching orbit took another four years. Roughly four times larger than Vikram-S, Vikram-1 must not only reach an altitude of 280 miles (450 km) but also accelerate its payloads to about 8 km (5 miles) per second — fast enough to remain in orbit around Earth. Along the way, it must execute a precisely timed sequence of stage separations before relying on its restartable liquid-fueled upper stage to place satellites into their intended orbits — capabilities that Skyroot has extensively tested on the ground but has yet to demonstrate in flight.

"We were very optimistic that we will get to an orbital launch in maybe two, three years from there," said Chandana. "However, rocket science is rocket science."

"We learned a lot of things on the go," he added. "Because of that optimism, we were able to process progress very fast."

When Chandana and co-founder Bharath Daka left the Indian Space Research Organisation (ISRO) to establish Skyroot in 2018, India's private launch industry was almost nonexistent. The country had yet to adopt a national space policy or create a formal framework for private investment, and startups had no established pathway to use government launch facilities. Instead, Skyroot relied on India's existing aerospace supplier base, the expertise of former ISRO engineers and the founders' belief that India's proximity to the equator would eventually help make the country an attractive base for commercial launches. (Earth spins faster near the equator, giving rockets launched from low latitudes an extra push toward orbit.)

"We just took the leap of faith," Chandana said.

That bet paid off. In 2020, the Indian government opened the space sector to private companies by establishing the Indian National Space Promotion and Authorization Center (IN-SPACe). The move, followed by a new space policy in 2023, allowed startups to independently design, test and launch their own space technologies while also giving them access to ISRO's launch pads, propulsion test stands, and other facilities.

"That accelerates our development cycles, because we need not invest and put energy into building facilities," Chandana said.

Since the reforms, India's space sector has grown from a state-dominated enterprise to an ecosystem of more than 400 startups. Jitendra Singh, India's minister of state for science and technology, recently estimated that the country's space economy, valued at roughly $8.4 billion in 2022, could expand to about $40 billion over the next decade as private investment and launch activity accelerate.

Skyroot is already looking beyond small satellites to capture a share of that growing market. Chandana said the company, now valued at $1.1 billion after raising $60 million in May, plans to develop larger launch vehicles capable of carrying heavier payloads while investing in reusable rocket technology to decrease launch costs.

"There's a very attractive market for the bigger payloads and bigger vehicles as well," Chandana said. Reusable rockets, he added, will become increasingly important particularly for launching big satellite constellations.

For now, however, the company's attention is fixed on the rocket standing on the launch pad in Sriharikota.

The final days before launch are among the most operationally demanding for the team. Chandana said there is also a palpable sense of excitement in the debut of India's first privately developed orbital rocket, particularly for the company's young workforce, many of whom are experiencing their first orbital launch campaign.

"We have been preparing ourselves for quite some time towards this launch," said Chandana. "For us, the mood is very energetic right now."

Tiny pieces of space junk only 2 inches (5 centimeters) in size are cluttering a valuable orbital region where some of the costliest satellites reside, a new study has found.

Researchers from the University of Warwick in the U.K. found that the geostationary orbit — a region of space at the altitude of 22,000 miles (36,000 kilometers) — is full of dangerous, previously unseen bits of space junk that could destroy satellites.

The geostationary orbit is quite unique. Satellites at this altitude circle Earth in sync with the planet's rotation, appearing permanently suspended above a fixed spot on the equator. A single satellite in the geostationary ring has a constant view of a vast portion of the globe. This feature has been taken advantage of for decades for things like TV broadcasting, internet delivery, Earth observation and weather monitoring. But, as it appears, those satellites might not be safe up there at all.

"The debris in geosynchronous orbit is a potential minefield," Stuart Eves, the study’s co-author and space consultant at SJE Space, said in a statement. "No one in their right mind would enter a terrestrial minefield without a mine detector. Similarly, no one in their right mind should launch a satellite to GEO without an adequate debris survey."

The researchers uncovered the previously invisible debris by re-examining a dataset from an earlier space debris survey conducted by astronomers using the 8.3-foot (2.54-meter) Isaac Newton Telescope in La Palma, Canary Islands. They ran the data through new image processing algorithms to distinguish smaller and much fainter fragments than was previously possible in the distant geostationary orbit.

"The blind stacking technique is a very powerful method for improving the sensitivity limit of astronomical datasets," Ben Cooke, a research fellow at the University of Warwick's Center for Space Domain Awareness and co-author of the paper, said in the statement. "It involves testing many potential paths in an image sequence along which hidden targets might be moving and stacking the images to help bring those targets above the noise floor. This project shows a successful, real-world application of the method."

The researchers found 25 previously missed debris tracks in the images, 80% of which were caused by previously unknown objects.

The finding is concerning as space debris at such high altitudes behaves differently from that circling closer to Earth. The residual atmosphere at 22,000 miles is almost non-existent, meaning there is no air drag to force the orbital clutter spiral into the atmosphere and burn up.

"Debris in the neighborhood of the geostationary belt is particularly concerning," James Blake, also a Warwick research fellow and the study’s co-author, said in the statement. "It's very far away, well above the Earth's atmosphere, so small objects tend to be incredibly faint and difficult to detect, and any debris that's generated will stick around indefinitely."

While orbits near Earth naturally clear up as the residual air at these altitudes slows the junk fragments down, at the higher altitude, the concentrations of such fragments will forever keep rising, making the region ever more tricky to operate in.

Moreover, the satellites that reside in this unique orbital region tend to be very large and expensive, designed for much longer missions than those making up megaconstellations in low Earth orbit. These satellites, frequently fitted with solar panels spanning 100 feet (30 meters) or more, can suffer substantial damage from a collision with the tiniest piece of junk.

"Pieces of space junk can be moving very quickly relative to one another, as much as several kilometers every second," Blake said. "The energies involved are really high, and even small debris can cause a lot of damage to very expensive satellites, so small things really matter."

The researchers are now looking to analyze additional images obtained by other telescopes around the world to get a fuller understanding of the scale of the debris contamination in the region.

The study was published in the Journal of Astronautical Sciences in June.

The first of perhaps tens of thousands of sunlight-directing space mirrors just got cleared for liftoff.

California-based startup Reflect Orbital just got a license from the U.S. Federal Communications Commission (FCC) to launch and operate its first demonstration satellite, a spacecraft that will unfurl a reflective surface that measures about 60 feet (18 meters) on a side.

That satellite, called Eärendil-1 is targeted to fly later this year. And it could be the first of many: Reflect Orbital aims to operate 50,000 or more such mirror-craft in low Earth orbit by 2035, beaming reflected sunlight down to a variety of customers on the surface.

"We're grateful to the FCC for recognizing the importance of testing novel technologies in space," Ben Nowack, Reflect Orbital's co-founder and CEO, said in an emailed statement on Friday (July 10).

"This license is the first step toward rigorously testing our technology's efficacy and the safeguards we have developed," he added. "We're excited to demonstrate how our technology works and to introduce transformative, clean technology the world urgently needs."

That technology could aid a variety of industries and endeavors, according to Reflect Orbital.

"Imagine the endless possibilities when sunlight is not limited by geography or time of day," the company's website reads. "A search-and-rescue team locates a missing person in minutes. A city has safer, evenly lit streets without the carbon emissions. Construction projects complete in half the time with teams able to work through the night safely."

The planned mirror constellation will also boost the productivity of solar arrays on Earth, allowing them to take more of the electricity-generating load from polluting options such as fossil fuels, according to the company.

Not everybody is thrilled about Reflect Orbital's plans, however. Satellite megaconstellations in general are controversial. Some folks object to how they're changing the night sky, for example, and others worry that deorbiting huge numbers of satellites will pollute Earth's atmosphere with heavy metals.

There are some specific concerns about Reflect Orbital's plans as well — namely, that it will introduce a new type of light pollution for people and ecosystems to deal with.

"The beam reflected by these satellites is very intense, four times brighter than the full moon, and they will be flying multiple satellites in a formation," John Barentine, an astronomer at the Silverado Hills Observatory in Tucson, Arizona and a consultant at Dark Sky Consulting, previously told Space.com.

"That will have an effect on wildlife in the directly illuminated area, but also, through atmospheric scattering, on the surrounding areas as well," he added.

Reflect Orbital stresses that it will do its best to minimize such potential impacts.

"We design for safety in three ways: 1) the light is contained within the spot, 2) the light can be turned off quickly and at any time so that none of it reaches the Earth, and 3) we can intentionally avoid sensitive areas like research observatories or protected habitats," the company's website states.

"The light is not bright enough to start fires or harm eyes, even when viewed through a telescope, and cannot be concentrated past maximum natural sunlight irradiance," it adds.

On April 6, the four crewmembers of NASA's Artemis II mission swooped around the far side of the moon in their Orion spacecraft, disappearing from Earth's sight and losing all contact with humanity for roughly 40 minutes.

At the same time, some 250,000 miles (400,000 kilometers) away, Chris White, the mission's lead communications officer, was nervously pacing the halls of NASA's Mission Control Center in Houston, waiting for the chance to do his job again.

"It was all nerves," White, the lead integrated communications officer (INCO) on Artemis II, told Live Science. In addition to maintaining communication with the Orion spacecraft (an impossible task while the moon blocked every signal), the INCO team also controlled its exterior cameras — a job White had previously done for the International Space Station (ISS).

The team knew for over a year what Orion's lunar flyby would entail, and which shots the cameras should capture. They had sent a checklist of nearly 300 commands to Orion that morning, telling the cameras exactly what to do after the spacecraft vanished behind the moon. All that remained was to wait.

After 40 minutes, bits of telemetry data started popping up on White's monitor as the Orion crew reemerged safely from behind the moon. Voice contact soon followed. But it would still take another day for Orion's flyby photos to traverse the space between the moon and Houston. When White finally opened the file the next morning, his body failed him.

"I opened a photo — the eclipse photo — and I couldn't breathe," White said. "I was like, 'There's no way that this turned out this well on the first try.'"

The INCO team's incredible Orion spacecraft photos have now been viewed by tens of millions of Earthlings. Live Science recently spoke with White to get the inside story of the images and the entire Artemis II mission as it was seen from NASA mission control.

Brandon Specktor: In a nutshell, what was your job on the Artemis II mission?

Chris White: During the mission, the INCO console manages all of the communication systems on the spacecraft, as the name kind of implies. We handle not just the video and the camera system but also the onboard audio system — which was the first flight for that — the system for radio communication and the optical communication system, which was a laser system on Artemis II. We also handle a couple of other minor systems.

BS: What was the vibe during liftoff?

CW: So, for liftoff, I was in the back, in a support room. The vibe was intense. Everybody was laser-focused on the task at hand. During simulations leading up to it, we had fake, simulated CGI views [of liftoff] to give us an idea of what we were going to see. I always thought, "Man, it's going to look so much cooler in real time." But then during liftoff, I looked up from my console screen zero times to look at the live video. So I didn't see a lot of that footage until the next day, when I had a chance to breathe.

The INCO team was basically flat-out busy for at least the first three flight days. For a lot of my team, it wasn't until after flight day three where things — and I'm going to use air quotes — loosely "calmed down." I don't think any of us truly relaxed until the vehicle was safely in the water.

BS: Let's talk about the lunar flyby. What was your experience watching along with the crew as they got closer and closer to the moon?

CW: It was incredible. I've seen the moon through the ISS cameras, and I'd watched the moon, over the course of the previous five flight days, slowly get larger and larger. But there was something logarithmic — almost like it just got really large very quickly on flight day six as we got close to the moon.

And the moon looked wrong, which sounds kind of crazy to say. We're so used to the way that the moon looks from our perspective here on the Earth, that when the vehicle was coming at it from an angle, you could see more of the backside of the moon. So you're in awe of it approaching and getting larger and realizing what's about to happen ‪—‬ but also my brain hurt trying to reconcile what I was seeing, because it didn't look correct. The shape and texture were different than what my brain expected.

BS: And the colors too, based on what the astronauts said. Did you notice anything unusual about the moon's coloration?

CW: It was hard to tell. The bandwidth limitations of being that far away from Earth made it hard to distinguish a lot of those finer details. But there was a moment where we looked at it and we were like, "I think we can tweak the exposure on this." It was a little too dark, and then we bumped it up a little bit. And all of a sudden, these muted grays became a little bit more brown. I was not expecting to be able to see that from our cameras.

You see it much more in some of the high-res photos that the crew took. But it was honestly shocking to see how much more color shows up even just a little bit as you get closer.

BS: As you were doing that flyby, did you have a strict checklist of shots you had to take?

CW: Yeah, absolutely. Flyby was a heavily choreographed event for the Orion cameras, as well as the crew and the science community. But we had started working on that plan well over one year earlier, and we knew exactly what shots we wanted and when we wanted them. The timing of all that shifts slightly, depending on exactly when you launch. So we had a framework in place, and then we just tweaked the timing in the 24 hours leading up to the events.

I think it was something like 290 total commands over the course of eight hours. We just scripted and time-tagged and put them on the vehicle, so it just clicked through them.

BS: How does that work during the eclipse phase, when you were out of contact?

CW: So we knew when Earthset ‪—‬ and, therefore, the start of the loss of signal (LOS) ‪—‬ would be and when Earthrise would be. And so we had the cameras flip into kind of a time-lapse mode at that point and then take a 30-second interval time lapse as the Earth got smaller and smaller and smaller behind the moon. All of that was scripted.

And then, behind the moon, during the LOS, it continued to take photos at a slower pace. I think it was like once every few minutes. We had all that on a timer, basically.

BS: How soon after the lunar flyby did you get to see the images?

CW: Luckily, we had a great optical comm pass that same night. So all those photos came down via laser to the Earth, and I saw them the next day. I didn't see them in the moment; I saw them the next day.

And I opened that photo — the eclipse photo — and I couldn't breathe. I was like, "There's no way that this turned out this well on the first try."

BS: Is that the photo that stands out most to you from the flyby?

CW: Yeah, it absolutely is. A lot of the photos you take in space, people are like, "Oh, where are the stars?" And it's because you have to expose the camera to the very bright, shiny spacecraft in front of you, and all the stars fade away into the blackness in the background.

But because the sun was behind the moon, you have the moon in the foreground in focus, the sun kind of bleeding out from behind it. The stars and the planets are all there. You can see Venus; you can see Saturn; you can see Mars. And then you have the glow of the spacecraft — it's not lit by the sun, but by the Earth — in the foreground. It was an incredible photo.

BS: What were you guys doing during that loss-of-signal phase? What was the vibe like then?

CW: I was pacing around the control center. The INCO team is responsible for keeping communication with the vehicle as much as we can, and there's not really much that we can do about that when you put a celestial body between us and the crew.

It's all nerves. It's all of the, "Hey, did we configure everything correctly? Are communications going to come back on the other side?" So just to distract myself for the 40 minutes that we were at LOS, I just kind of walked around the building and chatted with other people, just to try to keep myself distracted.

It wasn't until about three or four minutes after Earthrise that we started getting stable video, and then the crew called down. And that was really when I breathed a sigh of relief, once I heard voice coming down from the vehicle again.

BS: Do you feel different after this mission?

CW: People keep asking me that. I don't know that I've had quite enough time to fully unpack the mission. But I think it's slowly sinking in that we just sent four people around the moon, literally further away from Earth than ever. And I think, not only did we change them and the flight control team from that experience, but I think we changed a lot of people's perceptions of the moon, which is awesome.

BS: Do you know what your role for Artemis III is going to be?

CW: I definitely still plan to be on the INCO team for Artemis III. I will not be the lead for that mission. But I definitely still plan to be on console and hope to take some even more incredible photos during that mission.

BS: Any closing thoughts?

CW: I just want to stress what a team effort this was. The vehicle cameras had a script and a plan that involved not just the INCO team. But to point these cameras, I have to get the solar arrays swung forward in a specific direction, so I have to coordinate with the power guys. I have to sometimes ask the GNC [guidance, navigation and control] team to rotate the vehicle itself, which is entirely different from how we do things on ISS. There was our imagery team handling camera settings and proper exposure. There's the engineers who developed these systems.

This was not just me and the INCO team on console. It was truly a full flight control team effort to get these.

Editor's note: This interview has been condensed and edited lightly for clarity.

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