NASA's ambitious, expensive and intricate moon rocket, Artemis I, has had a rough run. NASA had to scrub the first launch attempt due to a troublesome engine issue. On attempt two, a pesky hydrogen leak kept the rocket grounded until repairs could be made. After testing on Sept. 21 cleared Artemis for a third attempt, NASA scientists circled Sept. 27 for launch. But that, too, was nixed as a tropical storm bore down on the Florida coast.
Image: The Artemis I mission has been delayed twice. NASA
