Two astronauts ventured outside the International Space Station on Friday (January 6) to upgrade the outpost’s power supply.<br /><br /> NASA’s Shane Kimbrough and Peggy Whitson, both from the USA, replaced older batteries with more powerful lithium-ion power packs during a planned six-hour space walk.<br />No Comment | euronews: watch the international news without commentary | http://www.euronews.com/nocomment/