CAPE CANAVERAL, Fla.—A fuel leak and then an engine problem during final liftoff preparations led NASA to scrub the launch of its mighty new moon rocket Monday morning on a shakedown flight with three test dummies aboard.
The next launch attempt will not take place until Friday at the earliest.
As precious minutes ticked away, NASA repeatedly stopped and started the fueling of the Space Launch System rocket with nearly 1 million gallons of super-cold hydrogen and oxygen because of a leak of highly explosive hydrogen in the same place that saw seepage during a dress rehearsal back in the spring….