Video: Change of command aboard International Space Station

NASA has signed a $490 million agreement with the Russian government to ferry U.S. astronauts to and from the International Space Station in 2018 and 2019 as a hedge in case of delays to Boeing and SpaceX crew capsules.

The Russian Soyuz MS-02 spacecraft and booster rocket were rolled out to the launch pad at the Baikonur Cosmodrome on Sunday in preparation for liftoff Wednesday on a two-day trek to the International Space Station.

After a 22-day stay at the International Space Station, an Orbital ATK Cygnus supply ship is set for departure Wednesday en route to a higher orbit for release of 14 CubeSats for commercial weather monitoring and technology demonstrations. The robotic Cygnus spacecraft is scheduled for release from the station’s robotic arm at 8:10 a.m. EST (1310 GMT) Wednesday.