Video: Change of command aboard International Space Station

Russian cosmonauts aboard the International Space Station commanded an approaching unpiloted Soyuz spacecraft to abort its docking Saturday after the ship’s automated rendezvous system ran into trouble, leaving ground teams assessing what went wrong and whether to attempt another link-up in orbit.

The four members of the SpaceX Crew-11 flight were previously set to fly on different missions before they ended up as a quartet on the Dragon Endeavour spacecraft. Liftoff of the Falcon 9 rocket from pad 39A at NASA’s Kennedy Space Center is scheduled for no earlier than Friday, Aug. 1, at 11:43 a.m. EDT (1543 UTC).

This collection of official NASA photographs captures the United Launch Alliance Atlas 5 rocket rolling to the pad on Monday, successfully blasting off Tuesday and the Cygnus freighter arriving at the International Space Station on Saturday morning.