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

SpaceX’s first Crew Dragon spacecraft, a capsule designed to eventually carry astronauts on treks to the International Space Station, has arrived at Cape Canaveral to begin preparations for launch on an unpiloted test flight later this year.

Citing medical reasons, Russia’s space agency announced Wednesday that it is replacing two cosmonauts who were scheduled to fly on the next Soyuz mission to the International Space Station in April with backup crew members.

Kirk Shireman, NASA’s program manager for the International Space Station, is retiring from the space agency later this month to take a position in private industry.