Video: Soyuz MS-01 leaves the space station for landing

SpaceX test-fired the Falcon 9 rocket early Saturday ahead of launch with the next four astronauts heading to the International Space Station. The static fire test before sunrise Saturday in Florida was a major step toward liftoff Thursday.

Northrop Grumman’s Antares rocket will deliver a Cygnus supply ship into orbit Saturday to begin a two-day pursuit of the International Space Station.

Poor weather in the offshore recovery zone east of Florida forced SpaceX and NASA to delay the departure of an upgraded Cargo Dragon spaceship from International Space Station Monday. The capsule is bringing home several tons of research equipment, specimens, and other equipment.