NASA Administrator Bill Nelson (left) meets with members of the “red crew” after they repaired a hydrogen leak at the Artemis 1 moon rocket’s launch pad. The red crew members, from left to right, were Billy Cairns, cryogenic engineering technician; Chad Garrett, safety engineer; and Trent Annis, cryogenic engineering technician. Credit: NASA/Sam Lott
NASA’s Space Launch System moon rocket relied on advanced guidance algorithms, powerful cryogenic engines, and millions of lines of software code to get it off the ground for the first time Wednesday. But “there are also times when you’ve just got to put a wrench on a nut,” NASA’s Artemis ground systems program manager said.