NASA

WASHINGTON — Amid growing national security concerns, the FBI said Tuesday that it has launched a broad investigation in the deaths or disappearances of at least 10 scientists and staff connected to highly sensitive research, including four from the Los Angeles area.

“The FBI is spearheading the effort to look for connections into the missing and deceased scientists. We are working with the Department of Energy, Department of War, and with our state and state and local law enforcement partners to find answers,” the agency said in a statement.

The FBI’s announcement comes after the House Oversight Committee announced that it would investigate reports of the disappearance and deaths of the scientists, sending letters seeking information from the agencies involved in the federal inquiry as well as NASA, which owns the Jet Propulsion Laboratory in La Cañada Flintridge, where three of the missing or dead scientists worked.

“If the reports are accurate, these deaths and disappearances may represent a grave threat to U.S. national security and to U.S. personnel with access to scientific secrets,” Reps. James Comer (R-Ky.), chairman of the committee, and Eric Burlison (R-Mo.) wrote in the letters.

President Trump told reporters last week that he had been briefed on the missing and dead scientists, which he described as “pretty serious stuff.” He said at the time that he expected answers on whether the deaths were connected “in the next week and a half.”

Michael David Hicks, who studied comets and asteroids at JPL, was the first of the scientists who disappeared or died. He died on July 30, 2023, at the age of 59. No cause of death was disclosed.

A year later, JPL physicist Frank Maiwald died at 61, with no cause of death disclosed.

Two other Los Angeles scientists are part of the string of deaths and disappearances.

On June 22, 2025, Monica Jacinto Reza, a materials scientist at JPL, disappeared while on a hike near Mt. Waterman in the San Gabriel Mountains.

On Feb. 16, Caltech astrophysicist Carl Grillmair was fatally shot on the porch of his Llano home. The Los Angeles County Sheriff’s department arrested Freddy Snyder, 29, in connection with the shooting. Snyder had been arrested in December on suspicion of trespassing on Grillmair’s property.

Snyder has been charged with murder.

There is no evidence at this point that the deaths and disappearances, which occurred over a span of four years, are connected.

A spokesperson for NASA, which owns JPL, said in a statement on X that the agency is “coordinating and cooperating with the relevant agencies in relation to the missing scientists.

“At this time, nothing related to NASA indicates a national security threat,” agency spokesperson Bethany Stevens wrote. “The agency is committed to transparency and will provide more information as able.”

Representatives from Caltech did not immediately respond to a request for comment.

WASHINGTON — NASA recaptured the world’s attention with Artemis II, which took astronauts to the moon and back for the first time in half a century. But the agency’s scientific projects could again be under threat as the Trump administration makes a renewed push to drastically cut their funding — including at the Jet Propulsion Laboratory.

The cuts, proposed in the Trump administration’s 2027 budget request to Congress, would pose further challenges to the already weakened Caltech-managed lab and could be broadly damaging to American efforts to bring back new discoveries from space. They echo last year’s attempt by the administration to slash NASA funding, which Congress rejected.

Though the Artemis project is billed as laying a foundation for a crewed NASA mission to Mars, exploration of the Red Planet is among the endeavors that could be slashed. The rover currently exploring Mars’ ancient river delta and a mission to orbit Venus are among projects with JPL involvement targeted for spending cuts, according to an analysis of the NASA budget proposal by the nonprofit Planetary Society.

“This isn’t [because] they’re not producing good science anymore. There’s no rhyme or reason to it,” said Casey Dreier, chief of space policy at the Planetary Society, which led opposition to the administration’s similar effort to cut NASA funding last year.

Storm clouds hang over the Jet Propulsion Laboratory on Feb. 7, 2024.

(David McNew / Getty Images)

This time, the administration is asking Congress to cut NASA funding by 23% — including a 46% cut to its science programs, which are responsible for developing spacecraft, sending them into outer space to observe and analyzing the data they send back.

The proposal would cancel 53 science missions and reduce funding for others, according to the Planetary Society analysis. The effort to pare down NASA Science comes amid the Trump administration’s broader effort to cut scientific research across federal agencies.

The plan swiftly drew bipartisan criticism from members of Congress, who rejected the administration’s similar 2026 proposal in January. Republican Sen. Jerry Moran of Kansas, who chairs the Senate appropriations subcommittee that oversees NASA, indicated last week that he would work to fund NASA similarly for 2027, saying it would be “a mistake” not to fund science missions.

Moran plans to hold a hearing with NASA Administrator Jared Isaacman before the end of April to review the budget request, a spokesperson for his office said. The president’s budget request is an ask to Congress, which ultimately holds the power to allocate funding.

But until Congress creates its own budget, NASA will use the plan as its road map, which could slow grants and contracts. The proposal “still creates enormous chaos and uncertainty in the meantime for critical missions, the scientific workforce, and long-term research planning,” said Rep. Judy Chu (D-Monterey Park), whose district includes JPL.

A NASA spokesperson declined to comment Friday. In the budget request, Isaacman wrote that NASA was “pursuing a focused and right-sized portfolio” for its space science missions in order to align with Trump’s federal cost-cutting goals.

The budget “reinforces U.S. leadership in space science through groundbreaking missions, completed research, and next-generation observatories,” Isaacman wrote.

Jared Isaacman testifies during his confirmation hearing to be the NASA administrator in the Russell Senate Office Building on Capitol Hill on Dec. 3, 2025.

(Anna Moneymaker / Getty Images)

At JPL — which has for decades led innovation in space science and technology from its La Cañada Flintridge campus — questions had already swirled about the lab’s role in the future of NASA work.

Multiple rounds of layoffs over the last two years, the defunding of its embattled Mars Sample Return mission and a shift by the Trump administration toward lunar exploration and away from the type of scientific work that JPL executes had pushed the lab into a challenging stretch.

It has had a steady stream of employee departures in recent months, and those left have been scrambling to court outside funding from private investors, sell JPL technology to companies and increase productivity in hopes of keeping the lab afloat, according to two former staffers, who requested anonymity to describe the mood inside the lab.

“If we’re not doing science, then what are we doing?” asked one former employee, who recently left JPL after more than a decade there.

A spokesperson for the lab declined to comment, referring The Times to the budget proposal.

The NASA programs marked for cancellation or cutbacks support thousands of jobs at JPL and other centers, said Chu, who has led a push for increased funding for NASA Science. After last year’s layoffs, JPL “cannot afford to lose more of this expertise,” she said in a statement.

Among the JPL projects that appear to be slated for cancellation are two involving Venus, Dreier said. One, Veritas, is early in development and would give work to the lab for the next several years, he said.

The project would be the first U.S. mission to Venus in more than 30 years, Dreier said, and aims to make a high-resolution mapping of the planet’s surface and observe its atmosphere.

The Perseverance rover, which is on Mars collecting rock and soil samples, could face spending reductions. The budget request proposes pulling some funding from Perseverance to fund other planetary science missions and reducing “the pace of operations” for the rover.

Though how the Mars samples might get back to Earth is uncertain, the rover is still being used to explore the planet and search for evidence of whether it could have ever been habitable to life.

Researchers hope the tubes of Martian rock, soil and sediment can eventually be brought back to Earth for study. The team has about a half a dozen more sample tubes to fill and the rover is in good shape, said Jim Bell, a planetary scientist and Arizona State University professor who leads the camera team on Perseverance, which works daily with JPL.

He said NASA’s spending proposal put forth “no plan” for the future of the agency’s work.

“Are people just supposed to walk away from their consoles,” Bell asked, “and let these orbiters around other planets or rovers on other worlds — just let them die?”

The NASA document did not clearly show which programs were targeted for cuts and did not list which projects were targeted for cancellation. The Planetary Society and the American Astronomical Society each analyzed the proposal and found that dozens of projects appeared to be canceled without being named in the document.

Across NASA, other projects slated for cancellation according to the Planetary Society’s analysis include New Horizons, a spacecraft exploring the outer edge of the solar system; the Atmosphere Observing System, a planned project to collect weather, air quality and climate data; and Juno, a spacecraft studying Jupiter.

The administration’s plan also doesn’t prioritize new scientific projects, Bell said, which further jeopardizes long-term job stability and space discovery at centers like JPL.

“We’re going through this long stretch now with very few opportunities to build these spacecrafts,” Bell said. “All of the NASA centers are suffering from the lack of opportunities.”

Last year, the Trump administration proposed to slash NASA’s 2026 funding by nearly half. Instead, Congress approved funding in January that provided $24.4 billion for the agency — a cut of about 29% rather than the proposed 46%. The 2027 budget request asks for $18.8 billion.

Congress kept funding for science missions nearly steady, allocating $7.25 billion for science missions, about a 1% decrease from 2025. The administration had proposed cutting the science investment down to $3.91 billion. This time, the budget requests $3.89 billion.

Under the Trump administration, NASA has put an emphasis on moon exploration, including this month’s successful Artemis II mission. Isaacman, who defended the proposed cuts on CNN last week, touted the agency’s lunar plans, including a project to build a base on the moon.

The agency has indicated commitment to some existing science missions, including the James Webb Space Telescope, the to-be-launched Nancy Grace Roman Space Telescope, the Dragonfly spacecraft set to launch for Saturn’s moon in 2028, and other projects.

“NASA doesn’t have a topline problem, we just need to focus on executing and delivering world-changing outcomes,” Isaacman said on CNN.

Scientists have urged the government not to choose between funding science and exploration but to keep up investment in both.

“It’s ultimately kind of confusing, especially on the heels of the Artemis II mission,” said Roohi Dalal, deputy director for public policy at the American Astronomical Society. “The scientific community … is providing critical services to ensure that the astronauts are able to carry out their mission safely, and yet at the same time, they’re facing this significant cut.”

The California Science Center announced Monday that construction has been completed on its new Samuel Oschin Air & Space Center, bringing the highly anticipated expansion one step closer to its public debut.

The culmination of a master project plan adopted in 1993, the sleek 20-story, 200,000-square-foot new building rising over Exposition Park will nearly double the museum’s exhibit space and anchor a $450-million campaign to permanently house the retired space shuttle Endeavour.

“I keep saying this, and it sounds cliché,” said Jeffrey Rudolph, the Science Center’s president and chief executive. “But it’s better than we ever dreamed.”

The Samuel Oschin Air & Space Center will be split into three galleries — air, space and shuttle — containing aerospace artifacts and hands-on exhibits demonstrating scientific principles.

At the heart of the new addition is Endeavour itself, displayed in a vertical “ready-to-launch” configuration that’s never been replicated with real hardware outside of a NASA or Air Force facility. The display includes rocket boosters from manufacturer Northrop Grumman and a massive external fuel tank from NASA.

Artifact installation is underway at the new Samuel Oschin Air & Space Center.

(Myung J. Chun / Los Angeles Times)

A veteran of 25 missions from 1992 to 2011, Endeavour arrived in L.A. in 2012 during a widely watched journey atop a modified Boeing 747, followed by a slow procession through city streets. For over a decade, the retired orbiter was exhibited horizontally in a temporary, tent-like structure known as the Samuel Oschin Space Shuttle Endeavour Display Pavilion.

In early 2024, Angelenos watched as the shuttle was carefully lifted and placed into its final upright position in an intensive overnight operation.

With several observation areas spanning the nearly 200-foot tall shuttle stack, Rudolph said the new installation will offer visitors “views that almost no one’s ever seen.”

A cutting-edge building design by architectural firm ZGF Architects contributes to that awe-inspiring experience with a 2,000-ton curved structural framework of diagonally intersecting steel beams called a diagrid, which eliminates interior columns and allows visitors unobstructed views of the shuttle stack.

The idea is that “you don’t have a sense there’s a building at all,” said Ted Hyman, partner at ZGF Architects. Instead, you’re meant to feel like you’re standing on a launch pad outside. The dimness of the shuttle gallery also assists in the immersive fantasy, both as an artistic choice and a practical one due to the shuttle’s sensitivity to light.

Yet while the structure is designed to be undetectable from the inside, it’s a full-blown metallic colossus on the outside — visible from the surrounding L.A. freeways. Its colors are most magnificent at sunset.

When asked whether he’d had any doubts about the feasibility of the intricately choreographed construction project, Hyman replied, “I think up until about last week.”

Nonetheless, he said, “you forget about the challenges when you see the building done.”

Lynda Oschin, wife of the new air and space center’s titular philanthropist Samuel, called the project a “dream come true.”

“This space shuttle is everything rolled into one that my husband loved: astronomy, innovation, exploration, science, math and especially children,” Oschin said. “What this is going to do for the children is just incredible.”

The donor said her husband, whose picture is in the cockpit of the Endeavour, would have been very proud — if a little embarrassed — that his name is on the new building.

The Samuel Oschin Air & Space Center is 20 stories tall.

(Myung J. Chun / Los Angeles Times)

With the construction phase in the rearview, Rudolph said the center is now focused on completing installation of the galleries’ artifacts and hands-on installations. The Samuel Oschin Shuttle Gallery, which houses the Endeavour shuttle stack, is nearest to completion. In the two others, artifact installation is well underway.

The Korean Air Aviation Gallery explores the mechanics of flight and will display approximately 25 aircraft, from historical relics like the WWII “Vampire” jet to modern supersonic jet fighters. The Kent Kresa Space Gallery will feature a wide array of spacecraft, planetary probes, telescopes and more. Rudolph was especially excited about acquiring a SpaceX Cargo Dragon, which will further the air and space center’s goal to “show people that this isn’t all history.”

“There’s a lot of amazing things going on in aviation and space, and a lot of it happening in California,” the executive said.

The interactive installations complementing the artifacts include a 747 flight simulation and a 45-foot-long slide carrying visitors down to the bottom of the shuttle stack, which Rudolph himself has already ridden. His goal with these novelties was to both educate visitors about scientific principles and get children excited about the subject, which can get flattened in the traditional school system.

“Kids get turned off to science very early,” Rudolph said, but when they come to the science center, it’s like a whole new world opens up to them.

Rudolph said he expects to announce an opening date for the Samuel Oschin Air & Space Center this summer. He added that while it’s his intention to open by the 2028 L.A. Olympics, “we’re not really building this for a two-week athletic event.”

“We’re building this for the next 50 years to serve our community and inspire people,” he said.

As Rudolph made his way across the science center campus in March, he chuckled at the children bumping into him on their way to the exhibits.

“Future scientists, right?” he said.

Scientists from NASA have hailed the Artemis II mission to send astronauts around the moon as a ‘fantastic feat’ but said there was more work to do, after the crew was safely brought back to Earth on Friday.

LIAM PAYNE will live on in the stars after fans sent his name to the moon.

I can reveal kind-hearted supporters opted to include Liam’s name on an SD card that was blasted into space aboard the Artemis II mission.

The singer, who was a life-long lover of space and sci-fi, had his name included alongside 1.5million others inside a cuddly toy of the craft’s ­mascot, Rise.

Taking to X, one fan wrote: “Liam Payne’s name has gone to the moon . . . thanks to a dedicated fan @Annie23703.

“It feels so fitting, because he was always our light.

“From the stage to the stars, he’ll never stop  shining  for us.  You’re on a new journey.

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“We will miss you always.”

Another supporter added: “It’s an honour to do this for Liam. To infinity and beyond.”

In 2015, Liam teamed up with Nasa for One Direction‘s Drag Me Down video, which was shot at the Johnson Space Center in Houston, Texas.

Liam said at the time: “One of the coolest things about this is that we got to go and meet the head person at Nasa who is in charge of space stuff.

“The night before, I watched loads of these Nasa unexplained mysteries-style documentaries. I went loaded with all these questions.

“I asked one and the lady was like, ‘That’s ­classified, actually – you’re not supposed to ask that’.

“The suits we are wearing in that video have actually been to the moon. I never thought I would get to do that.”

NASA has unveiled the first images of Earth taken by Artemis II astronauts as they head towards the moon. The mission is expected to take humans farther from Earth than ever before, marking a major step in humanity’s return to lunar exploration.

March 30 (UPI) — NASA officials on Monday started the two-day countdown to the Artemis II mission launch, which will send a crew of four around the moon as they test the Space Launch System rocket and Orion spacecraft.

After canceling a launch attempt in February because of a helium valve concern, officials said that the only thing they are worried about ahead of Wednesday’s launch is the weather — and the forecast offers an 80% chance for the right conditions.

The 10-day mission, which will take the crew farther from Earth than any human before, is the next step in the agency’s goal of returning humans to the surface of the moon and establishing a permanent presence there.

With mission engineers starting the clock, the crew — Mission Specialist Jeremy Hansen, Mission Specialist Christina Koch, Commander Reid Wiseman and Pilot Victor Glover — are getting some rest and spending time with their families before starting their own pre-launch activities, officials said.

“The team concluded that everything continues to look good and there are no issues preventing us from pressing ahead,” NASA’s Associate Administrator Amit Kshatriya said during a media briefing from Kennedy Space Center in Florida.

“At this point, as we enter the pre-launch phase, we are in a strong posture and the mission remains on track,” he said.

Countdown to launch

The Artemis II launch window starts at 6:24 p.m. EDT on Wednesday, giving NASA two hours if the cumulus cloud cover is too heavy, which mission engineers said is the only thing about the weather forecast they are worried about.

The SLS and Orion was initially rolled out to the launch pad in February but engineers discovered an issue with a helium valve during a wet dress rehearsal and decided to bring the rock back to the Vehicle Assembly Building to check it out.

After replacing the valve, and checking on other systems, the rocket was rolled back out on March 19.

Monday’s mission management team meeting is similar to the flight readiness review but is a faster rundown than that comprehensive effort as each group updates others on their pre-launch progress.

Charlie Blackwell-Thompson, launch director for the mission, said the launch countdown officially started at 4:44 p.m. EDT on Monday, which corresponds with NASA starting to configure ground facilities at the launch pad.

She noted that, while most people are familiar with a 30-minute or 10-minute countdown, launch countdowns are generally linked to the preparation needed for launch — shuttle countdowns started three days before launch, while commercial launches may often need a countdown of one day or less.

Crew awaits launch

The Artemis crew arrived in Cape Canaveral “on Friday, getting an opportunity for some rest before we work them very hard,” Emily Nelson, the mission’s chief flight director, said of the foursome, which has been in quarantine already for a couple of weeks.

Like many crews of astronauts before them, the Artemis crew has been staying at The Astronaut Beach House, which NASA has owned since 1963 and where space mission crews have spent time ahead of launches for decades.

Before the start of their final meetings and prep for launch, the crew was expected to eat dinner and spend time with their families, all of whom also have been required to comply with some sort of quarantine before getting there.

On launch day, after fuel tanking and last-minute items by a closeout crew around 1:00 p.m. EDT, the crew will board the Orion at 2:00 p.m. EDT to conduct communication system checks, configure the crew module and run the countdown to a 10-minute hold for about 30 minutes, Blackwell-Thompson said.

During that 30-minute hold, mission engineers will run through one more system-by-system before starting the final countdown to NASA’s first crewed mission to the moon in more than 50 years.

March 24 (UPI) — NASA on Tuesday announced plans to spend $30 billion on a permanent lunar base and send astronauts to the moon every six months after the Artemis V mission.

Speaking at a so-called “Ignition” event at NASA headquarters in Washington, D.C., Administrator Jared Isaacman discussed plans to accelerate construction of a moon base.

“There will be an evolutionary path to building humanity’s first permanent surface outpost beyond Earth,” he said.

“NASA is committed to achieving the near-impossible once again: to return to the moon before the end of President [Donald] Trump’s term, build a moon base, establish an enduring presence, and do the other things needed to ensure American leadership in space.”

NASA’s plan was initially to focus on what it called the Gateway program — a space station that was going to orbit the moon. Then the agency would build a base on the moon.

Carlos Garcia-Galan, the program executive for NASA’s Moon Base program, said the systems and hardware already established for the Gateway program would be repurposed to build the moon base.

Isaacman said the moon base plan will comprise three phases.

The first phase would include a series of missions to send small robotic landers and vehicles astronauts can drive on the surface to the moon. It would also encompass communications and scientific instruments.

The second phase would involve the construction of a “semi-habitable infrastructure” for astronauts on the lunar surface.

The third phase would start construction of a more permanent structure.

The first two phases would involve an investment of $20 billion over the next seven years and dozens of missions to the moon. The third phase would cost another $10 billion.

“The moon base will not appear overnight,” Isaacman said.

Isaacman said NASA also plans to launch a nuclear-propelled spacecraft to Mars by 2028.

NASA’s launch window for Artemis II is set to open April. The crewed mission is expected to send the Space Launch System and Orion spacecraft to orbit the moon over 10 days and return to Earth. The crew will test whether the spacecraft operates in deep space.

The long-term goal of the Artemis program is to re-establish a human presence on the moon in preparation for the ultimate aim of putting a human on Mars.

The agency will increase robotic missions to the moon and launch a spacecraft called Space Reactor 1 Freedom.

NASA has unveiled a major overhaul of its moon and Mars strategy, scrapping plans for a lunar-orbit space station and instead committing $20bn over the next seven years to build a base on the moon’s surface, while also advancing plans to send a nuclear-powered spacecraft to Mars.

NASA Administrator Jared Isaacman outlined the changes on Tuesday during a meeting in Washington, DC, with partners, contractors and government officials involved in the Artemis programme, saying the agency will increase robotic missions to the moon and lay the groundwork for nuclear power on the lunar surface.

Isaacman, appointed by US President Donald Trump and who took charge in December, said the changes form part of a broader overhaul of NASA’s long-term Moon-to-Mars strategy.

The planned moon base is intended to support long-term human presence on the lunar surface, with robotic missions expected to help prepare the site, test technologies and begin building infrastructure before astronauts return later this decade.

The agency also disclosed plans to launch a spacecraft called Space Reactor 1 Freedom before the end of 2028, a mission designed to demonstrate nuclear electric propulsion in deep space on the way to Mars.

The spacecraft will deliver helicopters on the Red Planet, similar to the Ingenuity robotic test helicopter that flew with NASA’s Perseverance rover, a step the agency said would help move nuclear propulsion technology from laboratory testing to operational space missions.

The Ingenuity helicopter was the first aircraft to achieve powered, controlled flight on another planet. It travelled to Mars attached to NASA’s Perseverance rover and landed in February 2021.

Pausing the Lunar Gateway station

The Lunar Gateway station, a planned space station in lunar orbit being developed with contractors including Northrop Grumman and international partners, was meant to serve as a base where astronauts could live and work before heading to the Moon’s surface.

But NASA now plans to repurpose some Gateway components for use on the surface instead.

Repurposing Lunar Gateway to create a base on the moon’s surface leaves uncertain the future roles of Japan, Canada and the ‌European Space ⁠Agency in the Artemis programme, three key NASA partners that had agreed to provide components for the orbital station.

“It should not really surprise anyone that we are pausing Gateway in its current form and focusing on infrastructure that supports sustained operations on the lunar surface,” Isaacman said.

The changes to NASA’s flagship Artemis programme are reshaping billions of dollars’ worth of contracts and come as the United States faces growing competition from China, which is aiming to land astronauts on the moon by 2030.

The Artemis programme, begun in 2017 during Trump’s first term as president, envisions regular lunar missions as NASA’s long-awaited follow-up to its first moon missions in the Apollo programme that ended in 1972.

March 12 (UPI) — The recent, new delay in NASA’s moon landing program represents the latest in a string of technical, budgetary, workforce and public perception challenges that plague the space agency, a UPI analysis shows.

When flight officials pulled the Artemis II Space Launch System and Orion spacecraft off the launch pad at Kennedy Space Center on Feb. 25 after a recurrence of helium flow problems and pushed the launch back to April at the earliest, it served as another reminder of the space agency’s current assortment of formidable problems.

Those issues include a moon program whose timeline keeps slipping; recurring technical failures and cost overruns with its flagship SLS rocket; a commercial lander — SpaceX’s Starship — that has yet to demonstrate reliability; the effective grounding of the Vulcan Centaur rocket made by United Launch Alliance; the departures of thousands of NASA workers and turnover in its top leadership positions.

The agency announced March 3 it had identified the latest problem with Artemis II as a faulty helium seal in the SLS upper stage, and that it is repairing the assembly, as well as making other fixes to the spacecraft.

But meanwhile, the lag time since the last crewed U.S. spaceflight has now stretched to three full years. This lengthy drought has prompted outside analysts and NASA officials to worry about how public support for the space program is being affected.

“When missions occur every few years, it is easy for people to lose interest,” said Burt Dicht, a leader of the National Space Society, who added he backs a newly announced NASA effort to increase the frequency of launches.

The latest delay has prompted a fresh look at some of the major challenges facing the space agency’s moon effort, as well as more general problems.

Headwinds with partners, personnel issues

One of the more pressing issues with the Artemis program is its dependence on SpaceX’s Starship Human Landing System, or HLS, as the initial human lander that will put the first U.S. astronauts on the lunar surface.

Elon Musk’s company signed a contract with NASA in 2021 to provide the lander, but struggled in 2025 to perfect the mammoth Starship V3 rocket necessary for a key element of the HLS mission, according to a report issued by NASA’s Aerospace Safety Advisory Panel and released last month.

The Starship V3 incorporates upgraded Raptor engines to provide it with the required performance for low-Earth orbit flight and on-orbit operations, and its development is deemed crucial for transferring fuel to an orbiting tanker.

How it performs will “ultimately determine the number of refueling missions required for the HLS mission,” which is now pegged at roughly 12 fueling flights, the report’s authors wrote.

“The development and test progress necessary for a version of Starship that has not yet flown in time to support a human lunar landing mission within the next few years appears daunting and, to the panel, probably not achievable,” they wrote.

SpaceX announced Feb. 26 that the first Starship V3 had left its build site at Boca Chica, Texas, and had begun prelaunch testing.

In 2023, NASA selected Blue Origin, owned by Amazon founder Jeff Bezos, to develop a second human landing system to compete with the HLS. Its Blue Moon Mark 2, to be launched aboard a New Glenn rocket, is to be tested twice and then carry a crew to the moon in late 2028.

New critical report

But NASA’s Office of Inspector General, in a report issued Tuesday, looked at both programs to carry astronauts to the moon and advised that the agency faces significant technical and programmatic risks that threaten mission timelines and crew safety.

The report said NASA is not fully adhering to “test like you fly” principles, particularly for uncrewed demonstration missions, and has not yet ensured that SpaceX’s Starship lander will meet manual control requirements for astronauts.

The inspector general also noted gaps in hazard‑mitigation planning and insufficient testing of critical systems, especially given the complexity of both SpaceX’s and Blue Origin’s lander architectures.

The report also warned that NASA the capability to rescue astronauts in the event of a life‑threatening emergency during lunar surface operations, echoing limitations from the Apollo era.

And it concluded that SpaceX and Blue Origin face technical challenges likely to cause additional delays, with SpaceX’s schedule slipping beyond its earlier 2027 target and even the revised 2028 goal remaining uncertain.

The report recommends stronger risk‑management practices, more realistic scheduling and more rigorous testing to ensure crew safety and mission success.

Meanwhile, NASA’s larger operations also could be affected by problems encountered in the new Vulcan Centaur rockets made by United Launch Alliance.

Vulcan launches halted

The U.S. Space Force last week temporarily halted all national security launches using the rocket after the same booster malfunction occurred twice, according to comments made by Col. Eric Zarybnisky at a meeting last month in Colorado.

The Vulcan Centaur program was established by ULA to reduce costs and eliminate reliance on the current workhorse Atlas V Russian-supplied RD-180 engine and is primarily meant to meet U.S. military needs.

But the program benefits NASA as well, giving it greater flexibility and transport capability for launching of payloads, the space agency said.

NASA also continues to struggle with an exodus of workers, including thousands of crucial senior staff, which some analysts believe is impacting its moon and Mars exploration goals due to a loss of expertise.

Nearly 4,000 agency employees last year chose to accept “deferred resignations” as part of the Trump administration’s efforts to slash the federal workforce — a move that reduced NASA’s employee roster by more than 20% to some 14,000, NASA spokesperson Cheryl Warner told NPR in June.

Still, even amid all of those issues, the agency was able to dodge the biggest potential bullet of them all — a proposed 24% reduction in its budget issued by the White House, which would have been the biggest cut in agency history.

That threat all but evaporated when Congress agreed on a $24.4 billion NASA spending bill in January, representing a mere 1.7% budget reduction.

The NASA administrator’s job itself remained unfilled throughout 2025, as President Donald Trump withdrew his nomination of Isaacman. Trump ultimately changed course, and Isaacman was confirmed by the Senate on Dec. 17.

Major changes for the Artemis program

Of all the difficulties faced by NASA, the technical problems and cost overruns of the Artemis program itself have emerged as perhaps the most high-profile.

The Feb. 25 postponement was the second recent delay for Artemis II, which is to send four astronauts on a “slingshot” fly-by around the moon. Last month, NASA pushed back the launch to March after engineers discovered what they called a significant hydrogen leak during a wet dress rehearsal.

NASA said Thursday it plans to roll the Artemis II Space Launch System rocket and Orion capsule back out to the launchpad next week, aiming for a launch in April.

The rollout wis to begin March 19, with an eye at launching as early as the evening of April 1, NASA officials said during a press briefing.

The original target date for landing astronauts on the moon — 55 years after the United States first did it — was 2024. When that was announced in 2019, many observers thought the target date was too optimistic.

The effort’s total cost after NASA recently added nine new elements now exceeds $20 billion, the Government Accountability Office reported last summer. Three of those elements have racked up a total of $7 billion in cost overruns.

NASA has made efforts to get a handle on the overruns through its Moon to Mars Program Office, the GAO said, but warned that each new delay to mission dates can create a cascading effect of increased costs across multiple programs that function independently of each other.

Clear warnings

And in its report from last month, the NASA safety panel sounded clear warnings about the “ambitious timeline” for developing the Human Landing System, given its “intricate operational design” and :complex concept of operations,” as well as other serious safety concerns surrounding the Artemis program.

Taken together, the issues posed a “high safety risk,” the panel concluded, which “casts doubt on the current Artemis III timeline and the feasibility of the Artemis III mission goals.”

In the wake of the latest issues, Isaacman announced a major revamp of Artemis under which the expected moon landing was pushed back from Artemis III in 2027 to Artemis IV in 2028.

“We have to rebuild core competencies,” he told reporters Feb. 27, blaming the repeated delays on too-infrequent launch schedules (known as the “launch cadence”), which he said causes “muscle memory” to “atrophy.”

“This is just not the right pathway forward,” he asserted, while revealing that a moon landing with Artemis III in 2027 has been deemed too ambitious and will instead now be attempted with Artemis IV in 2028.

Artemis III will instead now serve as a mission to perform tests on connecting with lunar landers in low-Earth orbit, as well as to test equipment that will go on Artemis IV.

Meanwhile, to bump up the launch cadence to once every 10 months rather than every three years, Isaacman announced a standardization of the SLS rocket fleet to “essentially near ‘Block-1’ configuration.”

The idea, he said, is to reduce the complexity of the massive rocket and to “accelerate manufacturing, pull in the hardware and increase launch rate, which obviously has a direct safety consideration to it, as well. You get into a good rhythm launching with greater frequency, you get that muscle memory.”

To do that, he added, “we need to rebuild and strengthen the workforce here at NASA. … We have to rebuild core competencies. The ability to turn around our launch pads and launch with frequency greater than every three years is imperative,” he said, pointing to the histories of the Mercury, Gemini, Apollo and Space Shuttle programs, when “the average launch cadence was closer to three months.”

The decision to simplify and standardize the SLS starting with Artemis IV also means the agency will no longer need to use the $1.5 billion Mobile Launcher 2 at Kennedy Space Center, which is still under construction and has faced its own cost overruns and delays.

Experts’ reactions

Experts who have been closely following the development of Artemis expressed a range of opinions about whether the latest moves are the right ones for the moon program and the U.S. space program generally.

Kenny Evans, a fellow in science, technology and innovation policy at Rice University’s Baker Institute for Public Policy in Houston, told UPI the glitches and the resulting negative perceptions of the program are indeed tied to the drawn-out launch cadence.

“The extended periods between SLS launches have given NASA fewer chances to test out hardware — and less cover for when things go wrong,” he said. “That has long been a valid criticism of the SLS program and a source of bad press — for example, the fueling issues in prior wet dress rehearsals.

“Working out kinks, as visible and expensive as they are, should be seen as net positives rather than programmatic failures,” he said.

“Frankly I’m relieved to see the timeline revamp,” Evans added. “The Artemis schedule Isaacman inherited had absolutely no chance of meeting its prior targets, and I’ve been impressed by his willingness to address the hard truths about the program.

“In terms of safety, making Artemis III a system test will provide NASA a much needed opportunity to remove as much risk as possible before attempting a lunar landing for Artemis IV,” he said while noting he is “particularly enthusiastic” about the NASA leader’s stated commitment to strengthening its workforce, “especially in light of cuts to agency staff.”

Meanwhile, the National Space Society’s Dicht, said his interactions with students, engineers, long-time space advocates and the public have shown him there is “real enthusiasm for progress in the space program,” but that new momentum is needed.

“I believe NASA Administrator Isaacman’s proposals to improve launch cadence, strengthen the workforce and standardize the SLS are positive steps that can help stabilize the Artemis program and move it toward a sustained return to the moon,” Dicht said.

“Whether it is SLS or any other rocket, these are extraordinarily complex machines,” he said. “Increasing the cadence of launches and ensuring the workforce is well-trained and consistently engaged helps build the operational experience, or ‘muscle memory,’ that improves reliability and the likelihood of mission success.”

While there is steady and palpable excitement over humankind’s first return to the moon since 1972 among committed enthusiasts, “there remains a segment of the public, including some social media influencers, who interpret technical issues as a sign that the program is failing,” he said.

“When missions occur every few years it is easy for people to lose interest,” Dicht said. “If the program can move toward a more regular rhythm, possibly two flights per year, it will attract attention and reinforce the sense that progress is being made.”

Similar to Apollo 9

Spaceflight historian and science author Amy Shira Teitel, creator of The Vintage Space YouTube channel, said the revamp “doesn’t particularly surprise me,” noting the decision to change Artemis III’s moon landing mission into a test flight is reminiscent of Apollo 9 in March 1969.

In that mission, a three-astronaut crew carried out vital tests while in low-Earth orbit to prepare for the historic Apollo 11 moon landing four months later.

“The plan to land Artemis III while still not having the lander ready or even chosen, from what I could tell, seemed like trouble waiting to happen, so the idea of going back to Apollo 9 and testing the hardware/mission in Earth orbit seems both safe and like it should have been the first step before going to the moon,” she told UPI in emailed comments.

The author of Breaking the Chains of Gravity: The Story of Spaceflight before NASA has questioned the overall purpose, cost and broader implications of the moon-to-Mars effort, contending it lacks a compelling justification other than “going for the sake of going” while the highly successful and popular International Space Station is scheduled to be scrapped in 2030.

All of the Artemis changes, Teitel said, are “emphasizing how hard it is, and how insane it is to be looking at canceling the ISS without a replacement and just focusing on the moon-to-Mars pipeline without any kind of long-term infrastructure or planning.

“And the endless issues with SLS — why are we adding more launches?” she asked. “We know this system is flawed. It feels like retrofitting a mission into the hardware to justify the … launch cost.”