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

SpaceX tested astronaut slidewire escape baskets and fire suppression capabilities Friday at launch pad 39A in Florida, demonstrating systems that would be activated in the event of an emergency before liftoff of a crewed mission.

A Russian Progress supply ship sailed to an automated docking Friday with the International Space Station two days after departing the Baikonur Cosmodrome in Kazakhstan, delivering approximately three tons of fuel, spare parts and water to the orbiting outpost and its three-person crew.

The second fully commercial astronaut flight to the International Space Station will have just two opportunities to launch Sunday and Monday, or else wait until after an upcoming SpaceX resupply mission next month to deliver a new set of high-priority solar arrays to the complex.