Video: Falcon launch replays

Four veteran astronauts have been selected to train for launch aboard new commercial crew capsules being built by Boeing and SpaceX that are intended to ferry astronauts to and from the International Space Station starting in 2017, NASA announced Thursday.

SpaceX is more than a week into a company-led probe of a launch pad explosion Sept. 1 that destroyed a Falcon 9 booster and an Israeli communications satellite, but the investigation so far has turned up no smoking gun on the cause of the mishap, Elon Musk said Friday.

The mission broke another record for SpaceX, marking the first time the company has achieved 14 launches in a single month. Liftoff happened Friday at 10:37 p.m. EDT (0237 UTC on Saturday).