Video: Change of command aboard International Space Station

Russian cosmonauts Alexander Misurkin and Anton Shkaplerov floated outside the International Space Station on Friday and installed an upgraded electronics box on a high-gain communications antenna at the aft end of the Zvezda service module.

The departure and return to Earth of a four-person space station crew on a SpaceX Dragon capsule has been postponed again by high winds in the splashdown zone in the Gulf of Mexico. NASA and SpaceX officials announced the Crew Dragon is now scheduled to undock from the International Space Station late Saturday for a predawn splashdown in the Gulf of Mexico early Sunday.

A rocket booster SpaceX used to launch a planet-hunting NASA observatory two months ago fired again Saturday at Cape Canaveral, clearing a major pre-flight checkout before blastoff June 29 with a space station supply ship.