An investigative update released Friday by SpaceX offered little insight into the likely root cause of a catastrophic explosion that destroyed one of the company’s Falcon 9 rockets during routine ground tests in Florida three weeks ago. Space Exploration Technologies Corp. said it believes there was “a large breach” in the helium system of the booster’s upper stage, which in less than one-tenth of a second caused an intense fire,...

Source: Wall Street Journal September 23, 2016 20:38 UTC