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

The Falcon 9 booster assigned to launch two NASA astronauts on an orbital test flight of SpaceX’s Crew Dragon capsule has been test-fired in Texas, but the schedule for the long-awaited mission remains unclear.

The last of Japan’s first series of HTV supply ships departed the International Space Station on Tuesday with several tons of trash, old batteries, and unneeded equipment, heading for a destructive re-entry before the debut of an upgraded cargo freighter design.

The launch of a Northrop Grumman Antares rocket with an automated commercial space station cargo vessel from Virginia was aborted less than three minutes before takeoff Sunday after engineers detected unusual readings from a ground support sensor. Northrop Grumman and NASA officials said the next launch attempt is scheduled for no earlier than Thursday.