NASA to Air Live Coverage of Spacewalk for Power System Upgrades Two astronauts aboard the International Space Station will conduct a spacewalk Thursday, Feb. 2, to continue the installation of hardware for future power system upgrades. The spacewalk is scheduled to begin at 8:15 a.m. EST and last about six and a half hours. http://www.nasa.gov/press-release/nasa-to-air-live-coverage-of-spacewalk-for-power-system-upgrades