Spacewalk with Astronauts Nicole Mann and Koichi Wakata at the Space Station (Jan. 20)

Astronauts Nicole Mann of NASA and Koichi Wakata of JAXA (Japan Aerospace Exploration Agency) will step outside the International Space Station for their first spacewalk to finish work preparing for solar array additions planned for this summer. The spacewalk is scheduled to begin at 8:15 a.m. EST (1315 UTC) and will last up to seven hours. Follow the space station blog for more updates: Credit: NASA