Live coverage: Kennedy Space Center to reopen Friday

Astronauts Christina Koch and Jessica Meir floated back outside the International Space Station Wednesday for history’s second all-female spacewalk, installing two powerful new lithium-ion batteries on the far left end of the lab’s solar power truss.

A United Launch Alliance Atlas 5 rocket powered away from Vandenberg Air Force Base in California tonight to place a classified surveillance satellite into space for the U.S. National Reconnaissance Office. Follow the ascent in our live journal.

The detective work into the Atlas 5 rocket’s first stage performance trouble during the Cygnus cargo ship launch a week ago has implicated the fuel system as the likely culprit for using up the liquid oxygen supply too quickly.