When the Antares rocket exploded on the launchpad last week, a lot fingers pointed toward its 70s-era Soviet engine. Indeed, Orbital Sciences now confirms a malfunctioning turbopump in the engine was the likely cause of the explosion. The company remains committed to fulfilling its space station resupply contract with NASA, though, likely by buying (newer) Russian rockets.

You can read more about the old Soviet engine on Antares below. [Orbital via Reuters]