Nasa scrubbed moon rocket launch due to leaks and a "possible crack"

Artemis 1, today's unmanned test flight to the moon, did not fly during this morning's two-hour launch window. Why? Leaks and a possible crack. (And storms rolled in anyway.)

As precious minutes ticked away Monday morning, NASA repeatedly stopped and started the fueling of the Space Launch System rocket because of a leak of highly explosive hydrogen, eventually succeeding in reducing the seepage to acceptable levels.