Watch replays of the Orion inflight abort test

Astronauts Drew Morgan and Christina Koch floated back outside the International Space Station Friday and completed work to replace six aging batteries with three more powerful units in one of the lab’s eight solar power circuits. Three more spacewalks are planned over the next two weeks to replace another six batteries in an adjacent circuit.

A Russian commander, his NASA co-pilot and the first Emirati to fly in space returned to Earth Thursday with a fiery re-entry inside the Soyuz MS-12 spacecraft on the way to an on-target parachute-assisted landing in Kazakhstan at 6:59 a.m. EDT (1059 GMT), a few hours after undocking from the International Space Station.

A Japanese H-2A rocket deployed a satellite in orbit Monday to measure greenhouse gases in Earth’s atmosphere and help scientists better quantify the role of human activity in climate change.