Implication of sabotage adds intrigue to SpaceX investigation

The long-running feud between Elon Musk’s space company and its fierce competitor United Launch Alliance took a bizarre twist this month when a SpaceX employee visited its facilities at Cape Canaveral, Fla., and asked for access to the roof of one of ULA’s buildings.

About two weeks earlier, one of SpaceX’s rockets blew up on a launchpad while it was awaiting an engine test. As part of the investigation, SpaceX officials had come across something suspicious they wanted to check out, according to three industry officials with knowledge of the episode. SpaceX had still images from video that appeared to show an odd shadow, then a white spot on the roof of a nearby building belonging to ULA, a joint venture between Lockheed Martin and Boeing.

Elon Musk, SpaceX’s founder and chief executive, has called the failure “the most difficult and complex” the company has ever had. About a week after the explosion, he pleaded with the public to turn in video or audio of the blast and said the company has not ruled out sabotage as a factor.

“Particularly trying to understand the quieter bang sound a few seconds before the fireball goes off,” he wrote on Twitter. “May come from rocket or something else.”

Since then, SpaceX, which is leading the investigation with help from the Air Force, NASA and the Federal Aviation Administration, said it is narrowing down on the cause of the explosion, focusing on a breach in a second-stage helium system.

At a conference in Mexico earlier this week, Musk said that finding out what went wrong is the company’s “absolute top priority,” but he said what caused the explosion is still unknown.

“We’ve eliminated all of the obvious possibilities for what occurred there,” he said. “So what remains are the less probable answers.” He didn’t say what those might be.

This week, 10 Republican House members, many friendly to ULA, told NASA that SpaceX should not be leading the investigation and that authority should be turned over to the federal government.