Best guess from /r/spacex seems to be that one of the tanks in the upper stage ruptured – we should find out more after the press conference at 12:30pm EST.

Edit: Looks like that was right.

Elon Musk on twitter:

    There was an overpressure event in the upper stage liquid oxygen tank. Data suggests counterintuitive cause.

posted by Unikraken: 1540 days ago