Live coverage: SpaceX grounds launch to wait for better recovery weather

Space station commander Chris Cassidy and Robert Behnken floated back outside Tuesday for their fourth spacewalk in less than a month, completing preparations for future upgrades including the eventual installation of an airlock that will allow commercial experiments to be moved into and out of vacuum as required.

The mission featured Luxembourg’s NAOS satellite along with seven other secondary satellites. SpaceX’s Falcon 9 rocket lifted off from pad 4E at Vandenberg Space Force Base at 11:53 a.m. PDT (2:53 p.m. EDT / 1853 UTC).

A SpaceX-owned Dragon supply ship packed with nearly three tons of cargo arrived at the International Space Station on Monday after a three-day trip from Cape Canaveral. The station’s robotic arm grappled the cargo capsule at 6:54 a.m. EDT (1054 GMT).