Live coverage: SpaceX supply ship returns to Earth

Space station astronauts closed hatches to the SpaceX Crew Dragon spacecraft Thursday, setting the stage for undocking early Friday and a fiery unpiloted plunge to splashdown off the coast of Florida. A successful return to Earth will help clear the way for launch of the first piloted test flight of the new ferry ship in the mid-summer timeframe.

NASA has decided to launch the multibillion-dollar Europa Clipper mission — a spacecraft to study a moon of Jupiter with an icy crust covering a liquid water ocean — aboard a commercial heavy-lift rocket in October 2024, and not on the government-owned Space Launch System, officials said Wednesday.

Two Russian cosmonauts floated outside the International Space Station Thursday for a planned six-hour spacewalk to manually launch five small satellites, to test a variety of spacesuit upgrades, to retrieve an external experiment and to carry out routine inspections and maintenance.