Video: Saturday’s SpaceX launch

Russia says a design bug from the pairing of a Progress spacecraft with an upgraded version of the venerable Soyuz launcher led to the loss of a resupply mission bound for the International Space Station on April 28.

The second set of Iridium’s next-generation satellites to launch on a SpaceX Falcon 9 rocket were prepared for liftoff inside a climate-controlled clean room at Vandenberg Air Force Base over the last few weeks.

SpaceX is expected to transfer its next Falcon 9 rocket to launch pad 39A at NASA’s Kennedy Space Center in Florida on Monday with a direct-to-home television broadcast satellite on-board, setting up for a two-and-a-half hour predawn launch window Tuesday.