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.

This video reel offers insights into the training of NASA astronauts Bob Behnken and Doug Hurley for their launch on SpaceX’s Crew Dragon spacecraft.

This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the EchoStar 19 satellite for HughesNet’s direct-to-home Internet connectivity. Launch is scheduled for Sunday at 1:27 p.m. EST (1827 GMT).