NASA was forced to end a critical fueling test of its giant Artemis 2 rocket early in the wee hours of Tuesday, delaying its mission to launch astronauts around the moon by at least a month.

Tanking operations began smoothly yesterday (Feb. 2) after mission managers polled "go" to begin procedures, but hydrogen leaks detected at the SLS tail service mast umbilical quick disconnect on the launch platform put technicians into a troubleshooting mode most of the afternoon.

src: https://www.space.com/space-exploration/artemis/nasa-had-3-years-to-fix-fuel-leaks-on-its-artemis-moon-rocket-why-are-they-still-happening
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