Spacewalking astronauts upgrade station with new batteries

Spacewalking astronauts hooked up fancy new batteries Friday on the International Space Station's sprawling power grid. NASA reported that all three lithium-ion batteries were up and running, a successful start to the space agency's long-term effort to upgrade the aging solar power system. Before venturing out, Commander Shane Kimbrough and Peggy Whitson got a hand from a robot that took care of most of the grunt work -- Dextre, a hulking machine with 11-foot arms. Peggy Whitson takes a spacewalk outside the International Space Station on Friday, Jan. 6, 2016. Whitson and Commander Shane Kimbrough went spacewalking to hook up fancy new batteries on the International Space Station's sprawling power grid.