Live coverage: Space station crew concludes 186 days in orbit

A 139-foot-tall Antares rocket is slated for a predawn launch Monday from the Mid-Atlantic Regional Spaceport on Virginia’s Eastern Shore, carrying a Cygnus supply ship heading for the International Space Station.

Europe’s ExoMars Trace Gas Orbiter and Schiaparelli lander arrived at Mars Wednesday, with the orbiter safely captured by Martian gravity after a critical engine firing. The lander’s fate is unknown after mission control lost contact just before touchdown.

A Russian-built Earth observation satellite designed to provide reconnaissance imagery to Egyptian military officials is ready for launch Thursday from the Baikonur Cosmodrome in Kazakhstan on top of a Soyuz rocket.