NASA confirmed that the Orion spacecraft has a helium valve leak in its service module, but officials say it won’t endanger the Artemis II crew during reentry. The issue will, however, force a redesign before Artemis IV, according to Ars Technica.
Amit Kshatriya, NASA’s Moon to Mars program manager, said engineers have several options on the table. “I’m pretty sure we’re going to need to, at a minimum, tweak the design to prevent the leak rate that we have, if not fundamentally change the way the valve works,” he told Ars Technica.
What’s Actually Happening
The leak sits in the European-built service module, manufactured by Airbus for the European Space Agency. Here’s the current timeline:
- Artemis II (crewed lunar flyby): proceeding as planned, leak not a safety concern
- Artemis III: scheduled for 2027
- Artemis IV: scheduled for 2028, will need the valve fix
Manufacturing of the Artemis IV service module is largely complete, so the redesign needs to happen on an already-built unit. Kshatriya called it “a production redesign risk” but expressed confidence the team can get ahead of it.
Valves: Spaceflight’s Eternal Headache
If this sounds familiar, it should. Leaky valves have plagued nearly every US human spaceflight program. Boeing’s Starliner suffered helium leaks during its 2024 ISS test flight. The Space Launch System rocket needed valve replacements before both Artemis I and Artemis II. SpaceX has scrubbed launches over valve issues. It’s one of those problems that never fully goes away.
“There are a lot of options for how to take care of this problem,” Kshatriya said. He emphasized that the team invested significant attention during this mission to fully understand what they’re seeing.
Not Another Heat Shield Situation
The comparison everyone’s thinking about: the Artemis I heat shield scare. That ablative thermal barrier burned away unevenly during reentry, triggering a two-year investigation. NASA adjusted Orion’s atmospheric reentry path for Artemis II and will debut a completely new heat shield design on Artemis III.
Kshatriya drew a clear line between the two issues. “It’s not a safety of flight, safety of crew, must-work function like the heat shield investigation sent us down,” he said. “It’s going to take work to get it right, but it’s not of that magnitude.”
Why This Matters
The Artemis program is NASA’s path back to the Moon with crew, and every technical issue adds pressure to an already tight schedule. The good news: NASA is treating this as a known engineering problem with clear solutions, not an existential design flaw. The valve fix won’t delay Artemis II or III, and Kshatriya expects the redesign timeline to be far shorter than the heat shield investigation.
For the full technical breakdown, check the original reporting at Ars Technica.