Watch replays of the Orion inflight abort test

Picking up where they left off last week, two space station astronauts ventured back outside the outpost Wednesday to continue the replacement of aging batteries in the lab’s solar power system. Two more spacewalks later this month should complete the multi-year project.

On the eve of the Iridium’s fifth launch with SpaceX, the mobile telecom satellite operator’s chief executive says he no longer waits for SpaceX’s rockets to be ready. Instead, Iridium’s satellite team is racing to keep pace churning spacecraft off their assembly line.

Russian engineers will replace rocket engines on two Soyuz rockets assigned to send a batch of supplies and the next crew to the International Space Station after an investigation revealed foreign objects or a manufacturing defect led to the crash of a Progress cargo craft on launch in December, according to Russian media reports and a statement from the Russian space agency.