NASA has announced a new commercial partnership for the next satellite headed to the Red Planet.

California-based Relativity Space will design, build and launch the spacecraft that carries NASA's Aeolus instrument suite to orbit around Mars, where the probe will be the first to provide daily measurements of the planet's global environment. Aeolus will collect data on Martian dust and cloud cover, winds and temperatures, according to a NASA release.

"Public-private partnerships like this are a force multiplier for science," NASA Administrator Jared Isaacman said in a statement on Wednesday (June 17).

The newly announced relationship, and others between NASA and private industry, is designed to allow the agency to concentrate its resources on important science discovery. "By pairing NASA’s world‑class instruments with commercial innovation and investment, we can deliver more science, more often, and reduce the time it takes to get essential data into the hands of researchers preparing for future human missions to Mars," Isaacman said.

Aeolus consists of four instruments, designed to work in tandem to create a complete picture of the Martian atmosphere and its behavior. In addition to refining scientific models for the Martian environment, NASA plans to use the data to reduce risks to future robotic and crewed missions landing on Mars' surface.

The science suite includes the Doppler Wind and Temperature Sounder (DWTS‑Ozone), in collaboration with GATS, designed to measure wind speeds and temperatures present up to 37 miles (60 kilometers) above the ground. The Thermal Limb Sounder (TLS), designed with Xiomas Technologies, will create vertical temperature profiles and provide data on atmospheric dust and cloud cover, while the Surface Radiometric Sensor Package (SuRSeP) collects compositional data on those clouds and dust, and tracks how the Martian surface absorbs, stores and releases energy, like heat. Finally, Aeolus' Wide‑Field Context Camera (WFCC) will take daily images to assess atmospheric activity across the whole of Mars.

NASA is targeting 2028 for the launch of the Aeolus mission, which will be designed and built at NASA's Ames Research Center in California, where it will also be integrated on Relativity's spacecraft for testing ahead of launch. NASA has committed to support Aeolus' scientific operations for at least one Martian year (approximately 687 Earth days). However, the agency has historically extended its missions to Mars, when able.

NASA was recently forced to end operations of its MAVEN (Mars Atmosphere and Volatile Evolution) probe around Mars, after an anomaly led to a loss of communications with the satellite, but the spacecraft ran for more than a decade beyond its original one-year mission. The agency's only two active satellites orbiting the Red Planet are the Mars Reconnaissance Orbiter (MRO) and Mars Odyssey, which are both operating nearly two decades or more, respectively, beyond their initial mission timelines.

For its part, Relativity will be in charge of designing the Mars-bound spacecraft and will also be responsible for launch and for satellite operations in space. The company's pathfinder launch vehicle, the Terran 1 rocket, lifted off for the first and only time in March 2023, but it failed to reach orbit. The company then pivoted to development of the bigger, partially reusable Terran R rocket, which is expected to debut sometime later this year. Eric Schmidt, who served as Google CEO from 2001 to 2011, was appointed to lead Relativity in March 2025.

Apple TV’s "For All Mankind" spinoff series, "Star City," places viewers directly behind the scenes of the hush-hush Soviet space program community in the late ‘60s and early ‘70s to witness all the harrowing missions, love triangles, espionage, sabotage, interrogation, and torture of those turbulent times. And believe us, there’s more than a little truth behind this alternative-history re-enactment.

Priya Kansara (who also voiced Ryan Gosling's AI spaceship in "Project Hail Mary") portrays Lakshmi Chadha in the absorbing new series. A gifted Indian aerospace scientist, Chadma, is recruited to Star City for a special, under-the-radar project by Rhys Ifans’ Chief Designer for the risky Venera-7 mission to Venus.

Josef Davies plays a younger version of Sergei Nikulov, a rocket engineer working at Soviet Ground Control, a character previously portrayed by Piotr Adamczyk in "For All Mankind." In that series, Nikulov becomes the director of Roscosmos and develops a relationship with Margo Madison (Wrenn Schmidt) during the Apollo-Soyuz program that leads to costly secrets shared and a very bad outcome.

Both Kansara and Davies both play pivotal roles in the show’s experimental Venera-7 deep space expedition and we spoke to them about crafting their roles. "I was very excited to play a much-loved character which people already know," Davies tells Space.

"But also to dive into it because this show has its own completely different identity. To be able to play that character that feels familiar but tells a lot more of the story to people who are interested in him and the world he came from.

"The whole experience has been incredible and something I hope continues for a very long time. I loved it deeply. Finding every moment of that character and really being able to have the reins to take control of it and play with it is my favorite part of the whole thing."

Kansara considered it a supreme privilege to play Lakshmi and to conjure up the character’s confident demeanor and innate determinism.

"She never questions her own ability even if the situation is not what was expected or somebody else doesn't believe in her," she reveals. "She really believes in herself. And when presented with a challenge she takes it head on even if it's terrifying."

"I really respect that strength that she has," continues Kansara. "It was so much fun to play and to explore that journey with her. The circumstances are so intense. Just some of the scenarios that are thrown at you, you’re like, 'I don’t have a relatable thing. This is not like life that we’ve experienced.' But it was fun to play with that as well."

Both Davies and Kansara had specific costumes touches that allowed them to create layered performances in their "Star City" episodes.

"The watch was a big one for me because it felt like it was mechanical," Davies mentions. "Everything was about precision and timing and all that. So that helped and it felt like an anchoring. Also my tie. I always liked for it to be a little bit too tight so I could feel it. That helped me get into that space. Honestly the whole thing was an amazing six months."

To stand out amid the drab colorless environment of Star City, costumers thankfully brightened things up for Lakshmi’s wardrobe.

"Lakshmi naturally had a little bit more color in her clothing because we wanted her to feel and look like an outsider," Kansara adds. "That was really important in terms of me walking into these bleak spaces. That physical reminder of me being someone who’s from the outside. The other thing was the Sindoor that I wear on my head, which is the red powder that symbolizes a married woman for Hindu and South Asian women. I wanted a piece of her that she can’t let go of. That’s hugely important. To put that on every day was a real grounding for me.

"We laughed a lot on set, we had so much fun filming together. It was amazing."

"Star City" season 1 is streaming now exclusively on Apple TV.

Heads up, stargazers! The notoriously unpredictable June Bootid meteor shower is set to peak this week — and anything could happen.

While most annual meteor showers follow a fairly predictable script, the June Bootids have a habit of surprising astronomers. Most years, the shower produces only a few meteors per hour. Occasionally, however, it erupts into an unexpected display.

In 1998, skywatchers were treated to an outburst of up to 100 meteors per hour, while another burst in 2004 produced an estimated 20-50 meteors per hour, according to the Royal Museums Greenwich. Yet the shower remains notoriously difficult to predict. In 2010, astronomers anticipated another outburst, but fewer than 10 meteors per hour were reported.

What causes the Bootids?

The June Bootids occur when Earth passes through debris left behind by comet 7P/Pons-Winnecke, which orbits the sun approximately every six years. As fragments of this icy wanderer's trail enter Earth's atmosphere, they burn up and create bright streaks of light we call meteors, or shooting stars.

When is it?

The shower is active through late June, with the peak of the shower predicted for between June 20 and June 27, according to the American Meteor Society.

How can I see it?

Most years, the June Bootids put on a very modest show with just one or two meteors per hour. However, they have earned a reputation for the unexpected, which is why many skywatchers keep an eye on them despite their modest rates. You never really know what the June Bootids have in store.

For the best chance of spotting a June Bootid, head to a dark location away from city lights if you can. The shower's radiant — the point from which the meteors appear to originate — lies in the constellation Boötes, which sits high in the western and southwestern sky during the evening for observers in the Northern Hemisphere.

While the radiant can help you identify June Bootids, you don't want to look directly at it. Instead, find a comfortable spot with a wide view of the sky and let your eyes adjust to the darkness for at least 20 minutes. Meteors are often easier to spot when you're scanning a broad area of sky.

WALLOPS ISLAND, Va. — For over 20 years, NASA's Swift space observatory has been conducting prolific science in orbit, hunting for signs of gamma-ray bursts — the most powerful explosions in the universe. Now, it's falling to Earth, doomed to a fiery death by the end of the year as its orbit decays.

But maybe not.

NASA, it turns out, has a daring rescue mission in the works, something never before attempted in space: the Swift Boost mission. The endeavor calls for an untested spacecraft built by the Arizona company Katalyst Space Technologies to rendezvous and dock with Swift — something the observatory was never designed to do — before the observatory falls back to Earth.

If all goes well, Katalyst's space tug (it's called Link) will lift the Swift observatory into a higher, safer orbit — one that will add years of life to the aging space telescope's mission. Liftoff is officially set for June 27, with Link launching on the last-ever Pegasus XL rocket, an air-launched booster built by Northrop Grumman.

"Frankly, I have to be honest: No one thought it was going to be possible," Shawn Domagal-Goldman, NASA's Astrophysics Division director, told reporters here on Wednesday (June 17). "No one thought we would get as far as we've already gotten today."

What stands out most is how quickly the mission came together.

It was just in September 2025 that NASA picked Katalyst to build a spacecraft capable of boosting Swift on a budget of $30 million. That was nine months ago. And now, the finished Link spacecraft — with its three robotic arms, three main Hall thrusters and a suite of other instruments — is packed aboard its Pegasus XL rocket and tucked on the belly of its L-1011 Stargazer carrier plane for a trip to its launch site in the South Pacific's Kwajalein Atoll.

"In the last nine months, we have gone from a clean sheet to a spacecraft that is currently integrated on a rocket on an airplane, ready to go to Kwaj for launch," said Kieran Wilson, Link's principal investigator at Katalyst Space, on Wednesday. "This is an absolutely unprecedented development timeline for this program."

Yet that "swift" timeline, if you will, is essential if NASA is to rescue the Swift space observatory.

NASA originally launched Swift (its full name is the Neil Gehrels Swift Observatory, after its late principal investigator) in 2004 on a $250 million mission to search the sky for gamma-ray bursts and other high-energy astrophysics phenomena in the cosmos. From its original orbit about 375 miles (600 kilometers) above Earth, Swift was a silent sentinel, ready to quickly pivot to new targets with unprecedented speed.

"Swift was designed to study gamma-ray bursts, short-lived flashes of high-energy light that release more energy in just a few seconds than the sun will in its entire lifetime," Swift principal investigator Brad Cenko told reporters Wednesday. "It's been extremely successful in this regard, detecting over 2,000 of these sources all the way out to the edge of the visible universe."

It was Swift that helped scientists confirm without a doubt that the heaviest elements we know of, including the shiny gold and platinum in the jewelry you're wearing right now, were forged by these explosive cosmic events, Cenko said. Swift was expected to last two years in orbit. It's well into its second decade now, and still in good health — well, except for that "falling out of space" part.

You see, Swift doesn't have thrusters, or a propulsion system of any kind. And over the years, an increase in solar activity — space weather from the sun — has puffed up Earth's atmosphere to create more drag on Swift than expected, pulling it down from its initial orbit.

Last year, the Swift mission team realized the space telescope was falling faster than expected. Without a rescue mission, Swift would crash to Earth by the end of this summer.

"It was okay for a generic spacecraft to come out of orbit," Domagal-Goldman said. "But this was not just any spacecraft. This is an observatory with unique capabilities for astrophysics … It is a swift observatory that can quickly pivot across the night sky to find things that go boom in the night."

"So we decided, yeah, we want to go save this one this time because of how special it is," he added.

A lot has to go right for Katalyst's Link spacecraft to rescue Swift.

The 937-pound (425-kilogram) spacecraft will launch into an initial testing orbit on June 27 and perform a series of checkouts to ensure that its basic systems (three main engines, 16 reaction control thrusters, solar arrays, robotic arms) are all working properly.

"We'll have a commissioning period of a few weeks, after which we will begin maneuvers in order to approach Swift," Wilson said.

Once Link reaches Swift's orbit, it will perform a series of proximity operations, dock, and then raise the space observatory to its initial orbit over the period of a several months. If that goes to plan, Swift could be back to performing science by this fall, Cenko said. (The telescope has been in a low-power mode to preserve what orbit it can since February.)

If Link is successful, Swift could get another five or more years of life in space. Link, meanwhile, will detach and be intentionally deorbited (meaning it will fall to Earth on purpose) to end its mission.

"All this is challenging and risky," Wilson said. "There's a lot of spacecraft that have had far longer development cycles with far more funding behind them that have failed for mundane reasons."

A lot of simple things can go wrong.

For example, the solar arrays on Link might malfunction, Wilson said. Swift has been in orbit for so long, its protective insulation blankets may be as brittle as glass and break when Link's robotic arms grab on, he added.

And then there's the sun. It was increased solar activity that put Swift in its perilous situation. That activity is ongoing. In fact, Swift may be one big solar storm away from doom if the sun fires off a major storm before Katalyst's Link can reach it.

Swift is on track to fall below an altitude of 186 miles (300 km) by October. At that point, it may be too low for Link to reach the observatory. A surprise solar storm could accelerate that fall, but NASA remains hopeful.

"At the moment, we think we have several months where Swift will be at a sufficiently high altitude to give Katalyst folks a great chance to capture and boost us," Cenko said.

Katalyst is banking on the future need for spacecraft servicing and life extension in space. This week, the company raised $12 million in funding to develop an even more capable spacecraft called Nexus, which it plans to "expand satellite servicing to multi-orbit, multi-mission operations."

"Over the last decade or so, we've gotten very good at launching things into space," said Robert Lamontagne, Katalyst's vice president for strategic partnerships. "Katalyst is here really to kind of demark the end of that throwaway model, and the start of a new model."

The first test flight of a Nexus mission could launch in 2027. Its target: a U.S. Space Force satellite called Rooster in geostationary orbit 22,236 miles (35,786 km) above Earth, much higher than the Swift observatory. That Nexus-1 mission will launch atop an Ariane 6 rocket next year.

One new mission is setting out to study menstruation in microgravity for the first time ever.

Forty-six years ago, NASA engineers asked Sally Ride if 100 tampons was the right amount to send with her for a six-day spaceflight. Though people laugh at that fact today, there has still never been any scientific study dedicated to studying menstruation in space. But a non-profit called Operation Period aims to change that. Led by Gen-Z researchers, this non-profit works to provide what its founder Manju Bangalore calls "menstrual freedom," which she says would mean everyone can have easy access to menstrual products. Meanwhile, the organization also aims to tackle the wider issues that leave people without such access in the first place. With its upcoming suborbital mission Operation Period-01 (OP-01), this ambitious team is taking their cause into microgravity. On OP-01, the mission's founder will launch to space to conduct the research themselves on a Virgin Galactic suborbital flight in 2027.

In conducting their work here on Earth, Operation Period found that "there were still some of those same gaps in spaceflight medicine," Manju Bangalore, the founder and executive director of Operation Period and research astronaut in training for OP-01, told Space.com. " I want all menstruators to be able to live life with their full dignity and reach their fullest potential, and that includes astronauts."

With a background in physics and astronomical engineering as well as with training in bioastronautics and having spent time working at NASA, Bangalore brings her love of space to this cause. She and Priya Abiram, the Director of Research at Operation Period's Redshift Lab, feel so strongly about their message, even 9 years since the pair founded their non-profit; in fact, with this mission, the two will become some of the youngest South Asian women to travel to space.

"On a personal level, I've always been fascinated by space and human space exploration. It's what's always excited me as a child, and I've kept that curiosity going," Bangalore said. "I didn't think those two missions would ever combine into this. It wasn't something I ever planned, but I'm very grateful to lead this historic mission to advance menstrual health in this way."

And just as this team is excited to bring their research into a suborbital environment, Virgin Galactic is excited to be expanding the range of microgravity science the non-profit supports. "This mission with Operation Period is a powerful example of how Virgin Galactic can continue to support real-time, in-flight scientific investigation into long-overlooked areas of human health, helping advance more inclusive and innovative exploration that delivers insight for both space and life on Earth," Virgin Galactic director of system analysis & research Amber Favaregh said in an emailed statement.

Recently, Operation Period expanded to include a research wing, and this mission will be conducted under that umbrella. The team was not yet able to share specific details on the exact protocol that will be conducted during the mission, information they said will be shared at a date closer to launch, but they did share the current issues that this research aims to begin to address.

Currently, astronauts typically choose to fully suppress their periods during their spaceflights, through hormonal IUDs or oral contraceptive pills. While that is a choice astronauts might continue to make in the future, without data to show the reality of dealing with a period in space, astronauts are left with fewer choices with their own bodies. Comprehensive data on menstruation in space will also be important if astronauts are to complete longer spaceflights or even extended stays on the moon. While the mission has not yet revealed its priorities and exactly what data it will collect, with such limited data on menstruation in space, there is a lot of knowledge to be gained.

While "the data that we have, although limited, says that it is generally safe to menstruate, in terms of long duration missions, we don't have quantitative data," Bangalore said. "We don't have enough data to continue to assist with patient resource allocation for mission planners."

Historic missteps like the "100 questions" moment with Sally Ride highlight an issue that could have big effects on future, longer-term missions. Sure, having a ridiculous number of backup products would ensure that there is no need unaddressed, mass considerations for spaceflight are extremely serious and future missions will need to have better data to know what will be needed in a microgravity environment.

And just like with other science in space, the research conducted in microgravity will also be used on Earth. The pair aim to collect menstruation data that will benefit astronauts as well as people back on our home planet. .

"I think on Earth, there's a lot of gaps right now in menstrual health research," Bangalore said. As just one example, she cited recent findings that menstrual product companies were reporting incorrect absorbency of their products because they were testing products with saline, which is very different from menstrual blood. "This was potentially leading to doctors to underdiagnosed heavy menstrual bleeding, which right now the stats say affects 20% of American menstruators," Bangalore said.

With this being the first mission of its kind, OP-01 will not answer every question that remains about menstruation and space, but it will bring data to a conversation decades in the making. "Our hope is to continue to iterate this research so that we can do future suborbital flights, as well as orbital flights, to continue to create larger data sets," Bangalore said. "I think the point of preliminary studies is to be able to know what questions to ask in the future, so we don't expect that this suborbital flight will solve everything or create all the data that we need, right, but we hope that this will be a good stepping stone."

Momentum for this research was actually sparked by many millions of views on a viral social media video in which Bangalore conducted an early version of a menstrual fluid dynamic experiment in a low-gravity environment aboard a parabolic flight.

This viral moment "ended up being a really cool kind of 'in' to continue talking about destigmatizing periods," she said. "Through that, I got to talk more about the gaps in spaceflight medicine, in terms of menstrual health."

It's Juneteenth in the U.S. today (June 19), a federal holiday that commemorates the end of slavery in America.

Though the Civil War ended in April of 1865, it wasn't until June 19 that same year when Union soldiers officially enforced the law that all enslaved people would be free. But the end of slavery was only the beginning of the challenges soon to follow; for one, segregation between Black and white people in the U.S., both systemic and informal, persisted for years. And we still live in a time when active racism, and the consequences of prior racism, trickle into many aspects of society.

It indeed affected NASA; Black women at the agency were once discriminated against despite making serious contributions to the space program. Our image of the day today celebrates the accomplishments of one such woman, Annie Easley.

Who is Annie Easley?

In 1955, Annie Easley started working for NASA's predecessor organization, the National Advisory Committee for Aeronautics (NACA). Her job was to serve as a "human computer," which was a position unique to the time. (NACA was dissolved in 1958, and its duties and personnel were taken on by the newly created NASA.)

Human computers at NACA and NASA were women who worked as basically early versions of computer programmers. To be a human computer, you had to be extremely good at mathematics, performing reliable calculations on a consistent basis to aid space missions.

Eventually, though, NASA moved toward the use of machine computers more often; Easley transitioned along with the space agency, ultimately becoming a full-fledged computer programmer.

As NASA explains, Easley's career shifted once again as it progressed. After some time, she took a position as the space agency's EEO, or Equal Employment Opportunity, counselor. She worked with NACA/NASA for 34 years before retiring in 1989. She passed away in 2011.

The importance of NASA's human computers

Like Easley, many of NASA's human computers became computer programmers once the agency made the transition to relying more heavily on machine computers. They together performed hundreds of thousands of calculations for the space program.

Easley alone was able to develop code that was crucial in research of energy-conversion systems, which paved the way for hybrid vehicles like the Centaur upper-stage rocket. Down the line, this work of hers contributed to the 1997 launch of the Cassini spacecraft that headed to Saturn.

However, the story wasn't as golden as it sounds retrospectively. Though NACA started hiring white women as "computers" in 1935, the agency didn't begin allowing Black women to enter the workforce until 1943. And that was only due to a shortage of professionals because of World War 2. In fact, human computers at the agency were not called professionals but rather "subprofessionals," and they were regularly talked down to by men who worked at the organization.

Black women had it particularly bad: They had to jump through hoops imposed by both racism and sexism.

Easley was one of just four African Americans out of 2,500 employees at NACA when she was hired.

In a 2001 interview, Easley recalled her mother saying to her: "'You can be anything you want to. It doesn't matter what you look like, what your size is, what your color is. You can be anything you want to, but you do have to work at it.'"

"I still believe that," she said.

Each November in the Northern Hemisphere, the astronomy world cranks up a gear. As Orion's Belt and the bright stars of winter appear in the east just after an early sunset, telescopes are added to Christmas lists. True darkness has arrived — long winter nights when stargazing sessions can go on for many hours. The blanket of stars has arrived.

I used to think beginners should start stargazing in winter. That's what astronomy books always imply: crisp, dark skies and brilliant stars, with the constellation Orion and its spectacular nebula dominating the heavens. My own book, A Stargazing Program for Beginners, outlines a month-by-month program to reveal all the night sky's biggest and most beautiful secrets in just one year — starting in January. Technically, it's all true. Winter skies are spectacular. But they're also cold enough to make most normal people give up after 15 minutes.

June is different. June is when the sky becomes readable. The nights are shorter, yes, and in the northern U.S., Canada and much of Europe, true darkness arrives very late near this weekend's solstice. But that softness is exactly what makes it approachable. You don't step into a black void filled with unfamiliar stars, shivering as you do so. You ease into it through lingering twilight, warm air, and a handful of large, obvious patterns that repeat night after night. Stargazing becomes a slow, easy, unrushed affair — and there's so much to see.

What's happening and when to look

Just as winter brings many hours of darkness that are hard to make use of — because of cold and clouds — summer brings the opposite problem. In June, you can stand outside in shirtsleeves, but only late at night. For example, in New York — at about 41 degrees north — sunset on the solstice is at 8:33 p.m. EDT, with astronomical night (defined as when the sun is 18 degrees below the horizon) between about 10 p.m. and 3:30 a.m. EDT. At 51 degrees north (much of Canada and the U.K.), astronomical night starts after midnight.

Wherever you are in the Northern Hemisphere, you can stargaze during the long twilight that begins about 45 minutes after sunset. With calmer weather compared to winter's haze and endless cloud systems, a clear sky is more likely — and so are camping trips under a dark sky.

There's another beginner advantage in summer that few mention: the learning curve is shorter. Summer constellations and asterisms rely more on large geometric patterns. You're not trying to memorize dozens of tiny stars, but instead you're learning shapes.

How and when I'm stargazing this month

Step outside around 10:30 or 11 p.m., depending on your latitude and face north to find the Big Dipper — the large spoon-shaped pattern high in the sky. Then use the curve of its handle. Follow the arc outward, and you'll arrive at a bright orange star low in the western half of the sky: Arcturus, in the constellation Boötes. Arcturus comes from the ancient Greek word Arktouros, meaning "guardian of the bear." It's an ancient star-hop, but now we know the science: Arcturus is a red giant star and the fourth-brightest star in the night sky. It's about 37 light-years away from the solar system and, at seven billion years old, it's older than the sun.

Even if you only find Arcturus, you've already learned a genuine navigation technique astronomers (and mariners) have used for generations. But there's more. Continue the same curve farther south, and you'll eventually reach Spica, a bluish star in the constellation Virgo. Its name means "ear of corn" because of its seasonal connection to agriculture and harvests. About 250 light-years distant, it's actually two massive young stars (12 million years old) orbiting each other.

Now turn eastward, where three bright stars dominate the summer sky: Vega, Deneb and Altair. Together they form the Summer Triangle, probably the single best beginner landmark in the Northern Hemisphere's summer sky. Vega is the easiest starting point because it's so bright and highest in the sky. Deneb sits below, and Altair appears lower. Once you can identify those three stars consistently, you've unlocked an enormous amount of the summer sky. Recognizing the Summer Triangle gives you orientation, confidence and a mental map.

Under darker rural skies, you may also begin noticing the Milky Way stretching behind Deneb and Altair later in the night. If you can't see it, you either need to stay outside a little longer (it takes 20 minutes away from any light — particularly the white light from a smartphone — to see it properly) or else the sky conditions are poor (which could include light pollution).

But even from cities, the bright and vast patterns of the summer night sky remain visible. Learn one new asterism or constellation each session — such as the faint outline of constellations like Virgo, Ophiuchus, Hercules and Corona Borealis — and repeat the process during your next stargazing session.

So lean into the solstice this week, do some real stargazing and build your confidence gradually while the geometry of Earth's tilt turns in your favor.

Stargazer's corner: June 19-25, 2026

The June solstice arrives this week, marking the longest days and shortest nights of the year in the Northern Hemisphere. Darkness is now at a premium, with extended twilight lingering well into the night and returning early in the morning, but the moon is back in the evening sky. On Friday, June 19, a 29%-illuminated waxing crescent moon will shine just to the left of Regulus, the brightest star in the constellation Leo. At the same moment, Venus will pass through the Beehive Cluster. It's the latter that you don't want to miss — it's a rare occurrence. On Tuesday, June 23, a 70%-illuminated waxing gibbous moon will shine next to Spica.

Constellation of the week: Cygnus

Is it a swan? Is it a Christian cross? Depending on how you look at the constellation Cygnus, it can be either, but its official name relates to the long-necked bird in flight. Positioned across the Milky Way, its most obvious star is Deneb — one of the anchor stars of the Summer Triangle — which marks either the body of the swan or the top of the cross.

Even in less-than-perfect skies, the shape of Cygnus is clear, and in darker conditions, it sits within a dense star field that hints at structure within the Milky Way.

Last year, NASA's Lucy spacecraft encountered a bi-lobed asteroid that is a chunk of an even larger rocky body that was smashed apart in an almighty collision 155 million years ago. This little pitstop happened on Lucy's way to a rendezvous with the Trojan asteroids that shadow Jupiter around the sun.

The asteroid 52246 Donaldjohanson, better known as "DJ" to Lucy's mission scientists and named after the paleoanthropologist who discovered the Lucy hominin fossil in Ethiopia in 1974, orbits the sun in the inner part of the main asteroid belt between Mars and Jupiter.

The true Lucy fossil dates back in time 3.2 million years and is an important link in the evolutionary chain that led to homo sapiens. Likewise, primitive asteroidal bodies are somewhat like fossilized remnants of the building blocks of the solar system's planets, including Earth. Understanding the make-up of these asteroids and where they formed versus where they are now can provide crucial insights into how Earth was assembled and where its organic materials and water may have come from.

Lucy flew past DJ in April of 2025. It is a pretty primitive asteroid, meaning that it has, or once upon a time had, certain volatile materials such as water-ice, as well as plenty of carbon — all things that can be removed thermally over time. Most objects that contain volatiles originate in the outer solar system, where it is cold enough that the volatiles do not sublimate away.

Within DJ's composition, Lucy detected iron-bearing phyllosilicates, which are a mineral formed in the presence of liquid water.

"Phyllosilicates are an indication that water was present and there was some degree of aqueous alteration," Simone Marchi, a planetary scientist from the South-west Research Institute and lead of the study into DJ, told Space.com.

However, for DJ to have had water, it must have formed further out from the sun, possibly in the outer asteroid belt.

"But DJ belongs to the inner asteroid belt so that's already intriguing," said Marchi.

The spectral evidence also indicates DJ was only partially altered by water, which Marchi says tells us something about its history.

"The aqueous alteration terminated early, and though we don't know why, we can speculate. In order to have aqueous alteration there needs to be some internal heating [usually via radioactive elements] and if something forms later than everything else then there will be less heat [since many of the radioactive elements will have already decayed]. Or perhaps there was just less water to start with where it formed."

What we do know is that DJ was once part of a much larger asteroid that suffered a giant impact 155 million years ago, causing the parent body to break apart into a number of chunks, the largest being the 45-mile-wide (73-kilometer-wide) asteroid 163 Erigone. Consequently, the remains of this parent asteroid, including DJ, are collectively referred to as the Erigone family.

DJ's violent origin may also explain its shape, which features two lobes joined together by a narrower and relatively smooth neck.

"We have now seen many small bodies in the solar system that appear to have this bi-lobed shape, and that's across a wide range of sizes," said Marchi.

For example the near-Earth asteroids 25142 Itokawa, which was visited by the first Japanese Hayabusa mission in 2005, and 4149 Toutatis that was encountered by China's Chang'e 2 in 2012, are both bi-lobed. So too is the tiny asteroid Selam, which is a satellite of the asteroid 152830 Dinkinesh visited by Lucy in 2023. Then there are cometary bodies including 67P Churyumov–Gerasimenko visited by the Rosetta mission and comet 19P/Borrelly, imaged by NASA's Deep Space 1 spacecraft in 1999.

These objects are all different sizes, different types and in different locations, but they all share the same structure. However, Marchi cautions that they might not all form the same way. For example, the neck between the lobes of comets such as 67P might form through erosion via sublimation and outgassing as the comet gets closer to the Sun, whereas for asteroids it might indicate a history of being involved in a giant impact, the resulting fragments coming together to be bound by gravity – a so-called contact binary.

Lucy now continues onwards, scheduled to encounter its first trojan asteroid, known as 3548 Eurybates, in August 2027. Trojans are asteroids that have been captured by Jupiter's gravity at the L3 and L4 Lagrange points, 60 degrees in front and 60 degrees behind Jupiter itself.

"We think that the Trojans, based on our understanding of the solar system, formed further out and then were captured where they are today following the early shuffling of the planets," said Marchi. "This shuffling could also have been the origin of DJ, so there could be a connection there between DJ and the Trojans."

Compositionally, the majority of trojans are expected to be even more primitive than DJ, containing more carbon, water and other volatile materials that would sublimate if they got too close to the sun.

That is all except one: Eurybates.

"It is the only one of our targets that from spectroscopy appears to be relatively similar to DJ. It's not identical, but it is closer in composition to DJ than the other Trojans, so it will be intriguing to compare them," said Marchi.

Indeed, any similarities will help tell us how asteroids were herded around during the first few hundred million years of solar system history following the formation of the planets. Jupiter and Saturn, especially, began migrating inwards and then out again. In doing so, their gravity pushed and pulled minor bodies all over the place, as did the gravity of Uranus and particularly Neptune as they edged outwards. These migrations led to the formation of the asteroid belt and the Kuiper belt, and ejected trillions of bodies into the wide orbits of the Oort Cloud.

"The key question is, if DJ has been relocated in the inner asteroid belt, then how many other asteroids came along with it and ended up being closer to the Earth, where they could have delivered some water, some organics and other things to our planet?" asked Marchi.

Lucy will visit six of Jupiter's trojans, which in total number over 15,300 discovered so far. Far from lumps of rock, the trojans, along with DJ and Dinkinesh (which is the Ethiopian name for the Lucy fossil), are windows into the past, and the storytellers of the Earth's most ancient history.

Lucy's findings from Donaldjohanson were published on Thursday (June 18) in the journal Science.