NASA astronauts conduct first of two scheduled ISS spacewalks to upgrade batteries

By David S Lewis [embed][/embed] Web news service Yahoo! News broadcast a live spacewalk on its Facebook page yesterday morning. The spacewalk, conducted by astronauts Commander Shane Kimbrough and Flight Engineer Peggy Whitson, both of NASA, was to make upgrades to the space station’s power system, including replacing 12 older nickel-hydrogen batteries with six lithium-ion batteries delivered last month. (more…)