There's another leak on the International Space Station, and NASA has already delayed one crew launch to the orbiting laboratory as a result.

Beyond that, the space agency is not offering much information about the unfolding situation in orbit. However, multiple sources have confirmed to Ars that the leak is a serious concern for the space agency as it deals with hardware that is approaching three decades in orbit.

To understand the current situation, it is important to review past leaks on the station, which has an aluminum structure. The station has had a slow but increasing leak since 2019. The air leaks are located in the transfer tunnel of the space station's Russian Zvezda service module, one of the oldest elements of the complex, the first elements of which were launched in 1998. The transfer tunnel, known by the Russian acronym PrK, connects the Zvezda module with a docking port where Soyuz crew and Progress resupply spacecraft attach to the station.

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© NASA/Roscosmos

Welcome to Edition 7.48 of the Rocket Report! The shock of last week's public spat between President Donald Trump and SpaceX founder Elon Musk has worn off, and Musk expressed regret for some of his comments going after Trump on social media. Musk also backtracked from his threat to begin decommissioning the Dragon spacecraft, currently the only way for the US government to send people to the International Space Station. Nevertheless, there are many people who think Musk's attachment to Trump could end up putting the US space program at risk, and I'm not convinced that danger has passed.

As always, we welcome reader submissions. If you don't want to miss an issue, please subscribe using the box below (the form will not appear on AMP-enabled versions of the site). Each report will include information on small-, medium-, and heavy-lift rockets, as well as a quick look ahead at the next three launches on the calendar.

Quebec invests in small launch company. The government of Quebec will invest CA$10 million ($7.3 million) into a Montreal-area company that is developing a system to launch small satellites into space, The Canadian Press reports. Quebec Premier François Legault announced the investment into Reaction Dynamics at the company's facility in Longueuil, a Montreal suburb. The province's economy minister, Christine Fréchette, said the investment will allow the company to begin launching microsatellites into orbit from Canada as early as 2027.

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© European Space Agency

Nearly two weeks have passed since Jared Isaacman received a fateful, brief phone call from two officials in President Trump's Office of Personnel Management. In those few seconds, the trajectory of his life over the next three and a half years changed dramatically.

The president, the callers said, wanted to go in a different direction for NASA's administrator. At the time, Isaacman was within days of a final vote on the floor of the US Senate and assured of bipartisan support. He had run the gauntlet of six months of vetting, interviews, and a committee hearing. He expected to be sworn in within a week. And then, it was all gone.

"I was very disappointed, especially because it was so close to confirmation and I think we had a good plan to implement," Isaacman told Ars on Wednesday.

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© John Kraus

Look, no one said building a large harvester to roam around the Moon and sift through hundreds of tons of regolith to retrieve small amounts of helium-3 would be easy. And that's to say nothing of the enormous challenge of processing and then launching any of this material from the lunar surface before finally landing it safely on Earth.

If we're being completely honest, doing all of this commercially is a pretty darn difficult row to hoe. Many commercial space experts dismiss it out of hand. So that's why it's gratifying to see that a company that is proposing to do this, Interlune, is taking some modest steps toward this goal.

Moreover, recent changes in the tides of space policy may also put some wind in the sails of Interlune and its considerable ambitions.

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© Interlune

Axiom Space plans to launch its fourth mission on Tuesday, June 10 — a mission that CEO Tejpaul Bhatia described as “a little bit of a victory lap.”

A robotic lander developed by a Japanese company named ispace plummeted to the Moon's surface Thursday, destroying a small rover and several experiments intended to demonstrate how future missions could mine and harvest lunar resources.

Ground teams at ispace's mission control center in Tokyo lost contact with the Resilience lunar lander moments before it was supposed to touch down in a region called Mare Frigoris, or the Sea of Cold, a basaltic plain in the Moon's northern hemisphere.

A few hours later, ispace officials confirmed what many observers suspected. The mission was lost. It's the second time ispace has failed to land on the Moon in as many tries.

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© Kazuhiro Nogi/AFP via Getty Images

Negotiations over the US federal budget for fiscal year 2026 are in the beginning stages, but when it comes to space, the fault lines are already solidifying in the Senate.

The Trump White House released its budget request last Friday, and this included detailed information about its plans for NASA. On Thursday, just days later, the US Senate shot back with its own budget priorities for the space agency.

The US budget process is complicated and somewhat broken in recent years, as Congress has failed to pass a budget on time. So, we are probably at least several months away from seeing a final fiscal year 2026 budget from Congress. But we got our first glimpse of the Senate's thinking when the chair of the Committee on Commerce, Science, and Transportation, Sen. Ted Cruz (R-Texas) released his "legislative directives" for NASA on Thursday

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© Getty Images | Tom Williams

A remarkable schoolyard brawl erupted online Thursday between President Donald Trump and his former "First Buddy" Elon Musk during which the pair traded insults and barbs. The war of words reached a crescendo during the afternoon when Trump threatened Musk's federal contracts.

"The easiest way to save money in our Budget, Billions and Billions of Dollars, is to terminate Elon's Governmental Subsidies and Contracts. I was always surprised that Biden didn't do it!" Trump wrote on his social media network, Truth Social, at 2:37 pm ET.

Anyone with a reasonable grasp of reality understood that the "bromance" between the president of the United States and the most wealthy person in the world was going to blow up at some point, but even so, the online brouhaha that has played out Thursday is spectacular—at one point Musk suggested that Trump was in the Epstein files, for goodness' sake.

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© Brandon Bell/Getty Images

In a revealing interview published by the All-In Podcast on Wednesday, the private astronaut nominated to lead NASA, Jared Isaacman, spoke at length on what he thought about the nomination process, how he would have led NASA, and the factors that led to the abrupt rescission of his nomination by President Trump.

"I got a call Friday, of last week, that the president has decided to go in a different direction," Isaacman said. "It was a real bummer."

It was a real bummer for most of the space community, myself included. To be clear, I am biased. I have gotten to know Isaacman over the last five years rather well, talking with him about his passion for spaceflight, what is working, and what is not. What I have discovered in Isaacman is a person who cares deeply about the future of US spaceflight and wants to make a meaningful contribution to its advancement. To see him done wrong like this, well, it's a very sordid affair.

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© NASA/Bill Ingalls

Researchers estimate that MoM z14 was created 280 million years after the Big Bang, 10 million years earlier than the previous most primitive galaxy recorded.

I did not expect to feature NASA astronaut Nichole Ayers in the Tuesday Telescope so soon, but a recent photo she shared is just sublime. (In case you missed it, we wrote about her photo of lightning from space about a month ago.)

This week Ayers has a time-lapse sequence she captured from the Cupola as the International Space Station soared near Central and South America.

"Soooooo much going on in this picture," Ayers wrote on the social media site X. "You can see Nicaragua, Costa Rica, and Panama, with South America off in the distance."

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© Nichole Ayers/NASA

The Trump administration has confirmed that it is pulling the nomination of private astronaut Jared Isaacman to lead NASA.

First reported by Semafor, the decision appears to have been made because Isaacman was not politically loyal enough to the Trump administration.

"The Administrator of NASA will help lead humanity into space and execute President Trump’s bold mission of planting the American flag on the planet Mars," Liz Huston, a White House Spokesperson, said in a statement released Saturday. "It's essential that the next leader of NASA is in complete alignment with President Trump’s America First agenda and a replacement will be announced directly by President Trump soon."

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© SpaceX

We’re thrilled by the overwhelming response to our call for speakers at TechCrunch Disrupt 2025, taking place October 27–29 at Moscone West in San Francisco. After a careful selection process, we’ve narrowed it down to 20 impressive finalists—10 breakout sessions and 10 roundtables. Now it’s your turn to help shape the agenda. Audience Choice voting […]

I'm incredibly excited, as part of the Ars Live series, to host a conversation with three of the very best space reporters in the business on Thursday, May 29, 2025, at 3 pm EDT about the future of NASA and its deep space exploration ambitions.

Joining me in a virtual panel discussion will be:

• Christian Davenport, of The Washington Post
• Loren Grush, of Bloomberg
• Joey Roulette, of Reuters

The community of professional space reporters is fairly small, and Chris, Loren, and Joey are some of my smartest and fiercest competitors. They all have deep sourcing within the industry and important insights about what is really going on.

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© SpaceX

SpaceX made some progress on another test flight of the world's most powerful rocket Tuesday, finally overcoming technical problems that plagued the program's two previous launches.

But minutes into the mission, SpaceX's Starship lost control as it cruised through space, then tumbled back into the atmosphere somewhere over the Indian Ocean nearly an hour after taking off from Starbase, Texas, the company's privately owned spaceport near the US-Mexico border.

SpaceX's next-generation rocket is designed to eventually ferry cargo and private and government crews between the Earth, the Moon, and Mars. The rocket is complex and gargantuan, wider and longer than a Boeing 747 jumbo jet, and after nearly two years of steady progress since its first test flight in 2023, this has been a year of setbacks for Starship.

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© SpaceX

On Tuesday afternoon, just a few hours before a launch attempt of the ninth flight test of SpaceX's Starship vehicle, Elon Musk spoke with Ars Technica Senior Space Editor Eric Berger to talk about where his space company goes from here.

In recent weeks, Musk has dialed back his focus on politics and said he wants to devote the majority of his time to SpaceX and his other companies. So what does that mean?

The conversation came just ahead of the opening of Starship's launch window, at 6:30 pm CT (23:30 UTC) in South Texas. Here is a lightly edited transcript of the interview.

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© Getty Images | Mario Tama

​​There are just 48 hours left to save up to $900 on your ticket to TechCrunch Disrupt 2025 — and get 90% off the second. After May 25 at 11:59 p.m. PT, Early Bird pricing vanishes — along with your best chance to join 10,000 of tech’s most forward-thinking minds for less. But forget the […]

Just 24 hours left to lock in Early Bird pricing for TechCrunch Disrupt 2025 — happening October 27–29 at Moscone West in San Francisco. Save up to $900 on your pass, or bring someone brilliant with you for 90% off their ticket. This deal ends tonight at 11:59 p.m. PT. Grab your Early Bird discount […]

In recent written testimony to a US House of Representatives subcommittee that oversees the military, the senior official responsible for purchasing launches for national security missions blistered one of the country's two primary rocket providers.

The remarks from Major General Stephen G. Purdy, acting assistant secretary of the Air Force for Space Acquisition and Integration, concerned United Launch Alliance and its long-delayed development of the large Vulcan rocket.

"The ULA Vulcan program has performed unsatisfactorily this past year," Purdy said in written testimony during a May 14 hearing before the House Armed Services Committee's Subcommittee on Strategic Forces. This portion of his testimony did not come up during the hearing, and it has not been reported publicly to date.

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© United Launch Alliance

The Federal Aviation Administration gave the green light Thursday for SpaceX to launch the next test flight of its Starship mega-rocket as soon as next week, following two consecutive failures earlier this year.

The failures set back SpaceX's Starship program by several months. The company aims to get the rocket's development back on track with the upcoming launch, Starship's ninth full-scale test flight since its debut in April 2023. Starship is central to SpaceX's long-held ambition to send humans to Mars and is the vehicle NASA has selected to land astronauts on the Moon under the umbrella of the government's Artemis program.

In a statement Thursday, the FAA said SpaceX is authorized to launch the next Starship test flight, known as Flight 9, after finding the company "meets all of the rigorous safety, environmental and other licensing requirements."

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© SpaceX