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An Extraordinary White House Meeting

© Adriana Loureiro Fernandez for The New York Times
The Wildfire Researchers Who Burn Houses Down on Purpose
'Full steam ahead': NASA ramps up prep for Artemis III astronaut launch in 2027
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.
The pieces for Artemis III are coming together at @NASAKennedy.The twin solid rocket boosters? They’re getting stacked.The launch team? They’re simulating the countdown.The heat shield? It’s now attached to the Orion spacecraft.Full steam ahead for Artemis III. pic.twitter.com/2f92kv6HEiJuly 13, 2026
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.
Observers Beware: Reflect Orbital’s Space Mirrors Approved for Launch
The Federal Communications Commission (FCC) has approved the launch of Reflect Orbital's Earendil 1 satellite — a space mirror 18 meters wide designed to reflect sunlight to the ground.
The post Observers Beware: Reflect Orbital’s Space Mirrors Approved for Launch appeared first on Sky & Telescope.
Roger Worthington Is Suing Over a Heat Wave
Roger Worthington Is Suing Over a Heat Wave

© Michael Hanson for The New York Times
NASA begins stacking rocket ahead of 2027 Artemis III astronaut launch (photos)
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.
Big move for @NASAArtemis III!The left-hand aft assembly solid rocket booster segment for NASA’s Space Launch System arrived at the Vehicle Assembly Building at Kennedy Space Center. This segment is part of one of two boosters that will provide more than 75% of the rocket’s… pic.twitter.com/L7k4Qh3Jn9July 8, 2026
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.
When the Spacecraft Align: Rescuing Saturated Images of Solar Flares

Many observations of solar flares suffer from saturation and blooming, causing crucial information to be lost. Researchers recently validated a technique for retrieving information from saturated flare images, unlocking a treasure trove of powerful solar flares for examination.
Solutions for Saturation
Since 2010, the Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) has been capturing nearly continuous extreme-ultraviolet images of the Sun’s disk, revealing our star’s dramatic high-energy behavior. Though SDO/AIA’s observations have transformed our understanding of the Sun’s activity, they have limitations: powerful solar flares can saturate the detector, spilling charge into nearby pixels.
This saturation and overflow compromises our ability to study the most energetic solar flares — but the “lost” information may actually be recoverable. When light from an intense flare enters SDO’s instruments, not all of it pools in the saturated region of the detector: some of the light is diffracted by the optics, and by mathematically inverting this pattern of diffracted light, researchers can attempt to extract the encoded information about the saturated region. Researchers have used this technique for more than a decade, but options for validating the results were limited until now.
Solar Orbiter Lends a Hand
Launched almost 10 years to the day after SDO, the Solar Orbiter spacecraft provides an excellent opportunity to test inversion techniques for recovering information from saturated solar images. Solar Orbiter’s Extreme Ultraviolet Imager snaps brief photos of the Sun at a rapid cadence, and its images remain unsaturated even when faced with energetic solar flares.

Positions of SDO (green) and Solar Orbiter (blue) during a solar flare on 19 March 2024. Click to enlarge. [Guastavino et al. 2026]
Guastavino’s team aligned and reprojected the data, accounting for the slightly different viewing angles of the two spacecraft, then applied an algorithm called Adaptive SE-DESAT to reconstruct the flux within the saturated portion of the SDO image. The team compared the desaturated SDO images to the unsaturated Solar Orbiter images over the course of the flare, finding the same flare morphology and similar time evolution between the two data sets.

Example of unprocessed SDO data (top left), desaturated SDO data (top right), Solar Orbiter data (bottom left), and a combination of the two data sources (bottom right). Note that the Solar Orbiter observations have been clipped so that only the highest flare intensities were recorded. Click to enlarge. [Adapted from Guastavino et al. 2026]
A Treasure Trove of Desaturated Data
Overall, these results demonstrate the effectiveness of the inversion technique, though Guastavino and coauthors noted that improvements could be made during the impulsive phase of the flare, when the emission is increasing. The team identified several reasons why the results may not match during this phase, including rapid evolution of the flare during individual exposures.
Despite these areas that require further attention, the validation of this technique unlocks 16 years of solar flare observations from SDO. This especially enhances our sample of powerful solar flares, increasing the available records of the most energetic solar flares by orders of magnitude.
Citation
“Validation of an Extreme-Ultraviolet Desaturation Technique for the Atmospheric Imaging Assembly on Board the Solar Dynamics Observatory Using Observations from the Extreme Ultraviolet Imager on Board Solar Orbiter,” Sabrina Guastavino et al 2026 ApJL 1005 L50. doi:10.3847/2041-8213/ae7d2e
The post When the Spacecraft Align: Rescuing Saturated Images of Solar Flares appeared first on AAS Nova.
Carbon capture is vital in tackling the climate crisis | Letters
Prof Myles Allen, Stephanie Loo and Toby Lockwood, and Olivia Powis, respond to an article by George Monbiot about ‘the great carbon capture con’
George Monbiot suggests that we can solve climate change without carbon capture and storage (The great carbon capture con: behold the wasted billions Burnham could claw back, 8 July). Physics says otherwise. The world is going to generate more carbon dioxide than we can safely dump into the atmosphere, and we can’t rely on our stressed biosphere and oceans to mop up the excess. Stopping global warming will therefore require capturing and durably disposing of carbon dioxide on a huge scale, which right now means injecting it back underground.
Where George does make a good point is in questioning whether carbon dioxide disposal should for ever be paid for using public money. Why should private companies be allowed to make large profits taking carbon out of the ground while the taxpayer foots the bill to put it back? The obvious solution: require those who extract fossil fuels to pay for the disposal of the carbon dioxide their products generate. If the fraction they store rises to 100% by mid-century, fossil fuel use would cause no further warming thereafter.
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© Photograph: Richard Saker/The Guardian

© Photograph: Richard Saker/The Guardian

© Photograph: Richard Saker/The Guardian
149 million views! Artemis II moon mission breaks NASA's streaming record
Nearly 150 million people shared in the "moon joy" of Artemis II on NASA channels, setting a new agency record in the process.
NASA numbers indicate that 149.4 million people used agency platforms in March and April to follow the four astronauts of Artemis II as they prepped for their mission, lifted off aboard the Space Launch System rocket, flew by the moon and finally splashed down in the Pacific Ocean. The viewership figure includes the mission's 24/7 livestreams of mission activities and views from the Orion spacecraft.
"Artemis II's human‑spaceflight narrative, real‑time crew updates, and highly visual moments drew millions of new followers across platforms," the agency stated of the historic lunar flyby mission, which ran from April 1 to April 10.
On board were NASA astronauts Reid Wiseman, Victor Glover and Christina Koch as well as Canadian Space Agency astronaut Jeremy Hansen. The quartet flew farther than any human before them while making the first journey to the moon since Apollo 17's landing in 1972.
Glover, Koch and Hansen became the first Black person, woman and non-American, respectively, to fly beyond low Earth orbit, and the crew engaged repeatedly in live events with politicians, journalists, students and other audiences from afar.
The live broadcast drew praise on social media for showing the work of the astronauts, including struggles with toilet venting, the crew's descriptions of the lunar surface and a moving group hug when the crew suggested naming a lunar crater after Wiseman's late wife, Carroll.
Launch (April 1)
NASA's official Artemis II launch webcast reached a peak of nearly 3.67 million simultaneous viewers. That's a record, surpassing other big launches in recent agency history, NASA stated, including that of the uncrewed Artemis I mission to lunar orbit in November 2022 or the James Webb Space Telescope in December 2021. (The agency did not disclose in the release how many views each event received.)
Roughly 16.6 million people watched the Artemis II launch live across agency platforms, with that number rising to 23.9 million views when taking into account those who tuned in after the fact. NASA's Spanish-language broadcast alone received a "landmark peak" of 458,366 simultaneous views, which has since risen to 2.8 million total views, according to the agency.
Lunar flyby (April 6)
NASA's lunar flyby broadcast alone "delivered one of the largest peak audiences ever recorded," according to the agency. As many as 1,471,069 people tuned in at the same time. Nearly 900,000 of those folks watched on YouTube, and about 190,000 viewers tuned in via X or Twitch.

Splashdown (April 10)
The dramatic reentry, splashdown and recovery of the four Artemis 2 astronauts generated a peak of 3,838,418 live viewers on agency platforms — nearly 5% higher than the liftoff's peak viewership.
NASA attributed the increase to interest in the "riskiest moments" that some global news outlets highlighted about the mission, "particularly Orion's re-entry and heat‑shield performance." (Unexpected issues with Artemis I's heat shield drew concerns from some when the agency flew the same design on Artemis II — although all turned out well, partly because NASA modified Artemis II's reentry trajectory.) Some news outlets, however, have said global interest came because the astronauts showed "worldly harmony" and shared their experiences with "heartfelt words."
Total, non-simultaneous live views of the splashdown on agency platforms clocked in at 24.1 million, which rises to 29.5 million when taking into account people who tuned in after the fact. But when bringing in a selection of the major broadcasters who covered the landing, NASA said that viewership rose to "hundreds of millions of potential viewers worldwide."
The agency focused on select streaming platforms in its analysis, including HBO Max, Netflix, Peacock and Amazon Prime Video. News networks were not included. The streaming platforms released subscriber numbers, but not mission viewership numbers. HBO Max had between 120 million and 150 million global subscribers during the mission, Netflix 325 million paid global subscribers (as Netflix allows some account sharing), Peacock between 36 million and 41 million U.S. subscribers, and Amazon Prime Video up to 275 million global subscribers, according to NASA.
Websites
NASA said a "major surge" came in agency website traffic because of Artemis II.
- Entire mission: NASA.gov received 125.1 million page views during the mission, which was a 150% increase over the 50 million who logged in during the entire month of March. A website showing Orion's orbit, called "Artemis II Mission in Real Time," or AROW, "surpassed" 11 million cumulative views since launch, although NASA did not say whether the AROW views continued to be counted after the mission concluded.
- Launch day (April 1): The mission's debut brought 17.6 million page views across all NASA sites, from 8.3 million individual visitors.
- Lunar flyby (April 6): More than 16.5 million page views came to NASA websites from 6.2 million individual visitors. As a part of the total page views, the NASA homepage got 2.3 million, while AROW showed 1.9 million.
- Splashdown (April 10): More than 6.1 million people logged on to NASA websites on splashdown day, generating 16 million page views. Of that figure, AROW alone generated 1 million page views.
Social media
NASA tracked 261 million individuals engaging with its social media accounts (which were not specified) between March 27 and April 13. Splashdown was the only milestone selected for individual analysis, with 35 million engagements shown on April 10.
"Public reaction to NASA's Artemis II mission remained largely steady across launch week, with neutral and positive posts dominating the online conversation. Neutral sentiment consistently led daily discussion, ranging from 47 to 60%, while positive reactions accounted for 30 to 42%, fueled by excitement over the crew's historic lunar journey, striking mission imagery, and renewed interest in deep space exploration," the agency stated of the engagement.
NASA also noted "strong amplification" on social media from "major news outlets, brands, and international partners." The Canadian Space Agency, working with other Canadian government departments and agencies, was the major international partner on Artemis II because of Hansen and backup CSA astronaut Jenni Gibbons (who also served as CAPCOM during lunar flyby), among other mission contributions. CSA hosted several live mission events in Canada, and had extensive social media engagement. The European Space Agency, which contributed the service module for Orion, also posted frequently during the mission.
NASA experienced "major social media growth" through Artemis II, with these figures below said to encompass the milestones between liftoff and splashdown. "Collectively, these gains highlight how Artemis II's human‑spaceflight narrative, real‑time crew updates, and highly visual moments drew millions of new followers across platforms," the agency stated.
- NASA's Instagram added 4.6 million followers. (The agency did not include the baseline number of followers during the mission in April, but as of July 7 it stands at 104 million).
- NASA's Artemis account on Instagram grew by 2 million, which was said to be "a 66 percent increase" while the mission was ongoing.
- The agency also noted "significant gains" on X, Facebook and YouTube. Numbers were not released for X. YouTube subscribers increased by 2 million during the mission in April; the baseline number was not disclosed, but as of July 7 numbers stand at 15 million. Facebook reached 1.7 million more people; as of July 7, the agency has 28 million followers on that platform.

Miscellaneous
NASA also highlighted a selection of its campaigns before and during the mission to engage the public's interest but released few metrics about how these contributed to overall viewership and engagement.
- The moon-mascot campaign: Thousands of people from 50 countries contributed ideas for a zero-gravity indicator for Artemis II, which ultimately ended up being "Rise" from eight-year-old Lucas Ye.
- Sending public names to the moon: Rise carried an SD card containing 5.6 million names submitted, from individuals around the world, to fly around the moon.
- Other partnerships: Artemis II was also highlighted on a Google Doodle on April 1, a Spotify playlist that featured the crew's wakeup songs, and on Merriam-Webster's Facebook page.
Datacentres drive up big tech’s carbon emissions to a third of those of France
Microsoft, Amazon and Google say they still aim to achieve net zero output despite construction boom
Microsoft, Amazon and Google’s collective carbon emissions have increased by nearly a fifth in the past year, driven largely by datacentre construction.
In the financial year ending March 2026, the three tech companies emitted 119m mTCO₂e (metric tonnes of carbon dioxide equivalent), or about a third of those of France.
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© Photograph: Audrey Richardson/Reuters

© Photograph: Audrey Richardson/Reuters

© Photograph: Audrey Richardson/Reuters
Putting the Landing Site Before the Lander

NASA is once again sending scientific missions to the Moon. But under the new commercial framework for getting there, researchers need to invent a new method for how to pick where to land.
A New Process for Picking Sites
NASA’s Commercial Lunar Payload Services program is a bold innovation in organizing robotic missions to the Moon. Under this model, rather than keeping the mission process entirely in-house, the agency selects the scientific mission they want to support then simply buys a ride to the lunar surface from a commercial vendor. But, how do you pick a landing site before you know exactly how you’re getting there?

The Gruithuisen domes region, the broad area the Lunar-VISE team searched for potential landing sites. Click to enlarge. [Adapted from Williams et al. 2026]
No Parking Lots on the Moon
Picking a landing site is no small task: for context, selecting the landing sites for each of the most recent Mars rovers took five years and multiple community workshops. The Lunar-VISE team therefore took a streamlined and logic-driven approach. They started by explicitly laying out their science objectives: Lunar-VISE’s purpose is to investigate some strangely silicate-rich volcanic formations called the Gruithuisen domes, so they had to land either on or near those. They also had to have access to boulders that were excavated from deep within the domes during a crater formation event, so they had to pick a spot with boulders relatively nearby.
In addition to objectives, they also laid out a slew of constraints. Although they needed boulders nearby, they couldn’t have too many boulders, or any particularly large boulders, since those could pose hazards for landing. There also couldn’t be any steep slopes in the field. Most of the area had to maintain a line of sight with a supporting orbiter for communications, so they couldn’t set down near any ridges. Also, they had to consider how the terrain would cast shadows as the lunar day progressed, since they didn’t want their mission cut short by freezing temperatures and a lack of solar power. As the team quipped, “many interesting, high-science value locations on the Moon may not be in proverbial ‘parking lots.'”

An image from the Lunar Reconnaissance Orbiter overlaid onto a terrain model of the final landing site. Click to enlarge. [Williams et al. 2026]
In addition to presenting their landing site, the researchers offered a handful of lessons to others who may someday be in the fortunate and thrilling position of needing to pick a landing spot on the Moon. For one, they urged teams to coordinate with the Lunar Reconnaissance Orbiter specialists as early as possible, since processing the imaging data for lander-quality maps is a specialized and intensive task. For another, they recommended that all of the software tools used be made publicly available so that future missions don’t need to duplicate their work.
As this article laid out, the Commercial Lunar Payload Services program and Lunar-VISE take us one step closer to making missions to the Moon routine — but we’re still figuring out exactly how to do that.
Citation
“Lunar-VISE Landing Site Selection and Characterization at Mons Gruithuisen Gamma,” Jean-Pierre Williams et al 2026 Planet. Sci. J. 7 161. doi:10.3847/PSJ/ae7d2c
The post Putting the Landing Site Before the Lander appeared first on AAS Nova.
Advanced Recycling Hits a Rough Patch

© Maddie McGarvey for The New York Times
E.P.A. Moves to Loosen Limits on Pollution From Trucks

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Trump’s Plans for Nuclear Power Lurch Ahead

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