Live coverage: Two satellites lift off aboard Ariane 5

An experimental microsatellite built and owned by Astro Digital, a California-based company, rode Rocket Lab’s Electron rocket into orbit at 9:22 p.m. EDT Wednesday (0122 GMT Thursday) from New Zealand.

European engineers test-fired the world’s most powerful present-day single-segment solid rocket booster Monday in French Guiana, clearing a major development hurdle for the Vega-C and Ariane 6 launchers set for debuts in 2019 and 2020.

Outgoing space station commander Randy Bresnik, joined by Russian cosmonaut Sergey Ryazanskiy and European Space Agency flight engineer Paolo Nespoli, returned to Earth early Thursday after nearly five months in orbit. Their Soyuz MS-05 capsule undocked from the International Space Station at 12:14 a.m. EST (0514 GMT), and landed on the steppe of Kazakhstan at 3:37 a.m. EST (0837 GMT).