Video: Highlights of second Expedition 50 spacewalk

Expedition 45 commander Scott Kelly and flight engineer Kjell Lindgren have switched their spacesuits to battery power to begin planned six-and-a-half-hour spacewalk Wednesday outside the International Space Station.

A Soyuz rocket and Progress supply ship packed with nearly 3 tons of cargo, provisions and fuel for the International Space Station rolled out to a launch pad at the Baikonur Cosmodrome in Kazakhstan on Monday.

Two Russian cosmonauts used the International Space Station’s Poisk docking compartment as an airlock for the first time Wednesday in a six-hour 48-minute spacewalk to begin preparing the nearly identical Pirs module for removal next year. A new laboratory module will be parked in its place later.