As NASA prepares to send astronauts around the moon, a critical dress rehearsal on Monday will reveal whether its rocket is truly ready to fly.
NASA halted the flow of liquid hydrogen to its Space Launch System rocket on February 2, 2026, after a leak during the Artemis II wet dress rehearsal exceeded safety thresholds, forcing the agency to ...
NASA’s first crewed moon mission in decades was delayed as its engineers grapple with an all-too-familiar rocket problem: hydrogen leaks. Fixing the issue is even trickier than it may seem.