Social News28 December 2016 NASA Preps for Space Station Power Upgrade Spacewalks; Live NASA TV Coverage Expedition 50 astronauts will venture outside the International Space Station at 7 a.m. EST Jan. 6 and 13 to perform a complex upgrade to the orbital outpost’s power system. CoverageContinue readingNASA Preps for Space Station Power Upgrade Spacewalks; Live NASA TV Coverage