Fuel leaks have forced NASA to scrub the launch of its new moon rocket on a no-crew test flight.
The next launch attempt will not take place until Friday at the earliest.
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The 322-foot Space Launch System rocket was set to lift off Monday morning with three test dummies aboard on its first flight, a mission to propel a capsule into orbit around the moon.
Related: Fuel leaks force NASA to scrub launch of new moon rocket