The National Transportation Safety Board began its investigation Saturday of the loss of Virgin Galactic's SpaceShipTwo VSS Enterprise.
Christopher Hart, acting NTSB chairman, said the wreckage of SpaceShipTwo was spread over five miles in the Mojave Desert, suggesting an “in-flight break up.”
After the first day of the investigation, Hart said NTSB officials have also determined that the breakup and subsequent crash were filmed by at least six on-board cameras, a camera at Edwards Air Force Base and cameras on a "chase aircraft" that was following SpaceShipTwo's test flight from Mojave.
“Because it was a test flight it was heavily documented in a way that we don’t normally see in accidents,” Hart said.
It could take up to a year for investigators to determine the cause of the crash. NTSB officials will remain in Mojave for at least seven days.
Earlier in the day, authorities identified the craft's two test pilots as Michael Alsbury, 39, who was found dead at the crash site with the main fuselage, and Peter Siebold, 43, who suffered a shoulder injury.
The NTSB has been posting video of the investigation on their YouTube channel.
Click the arrow to watch the first media briefing on November 1. Video source: NTSBgov YouTube channel.
Click the arrow to watch B-roll footage of NTSB investigators visiting the debris field on November 1. Video source: NTSBgov YouTube channel.
Click the arrow to watch the second media briefing on November 1. Video source: NTSBgov YouTube channel.