Investigators have traced the explosion that destroyed a SpaceX Falcon 9 on the pad Sept. 1 to a "large breach" in the helium system in the rocket's second stage, although the root cause of the accident remains unknown.
Investigators have traced the explosion that destroyed a SpaceX Falcon 9 on the pad Sept. 1 to a "large breach" in the helium system in the rocket's second stage, although the root cause of the accident remains unknown.