Isaacman pointed to hydrogen leaks on Artemis I and helium flow problems on Artemis II as signs that a three‑year gap between launches is not sustainable. When teams only fly every few years, he said, they lose "muscle memory" — the routine, hands-on experience required to handle a complex rocket safely and efficiently.
The overhaul to the Artemis launch schedule follows a report from NASA's Aerospace Safety Advisory Panel (ASAP) earlier this month that highlighted serious safety risks with NASA's p …
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