Astronauts to go on spacewalk after billion-dollar laboratory installation

Both the inside and outside of the international space station's newest room were getting spruced up yesterday.

Space shuttle Discovery astronauts Michael Fossum and Ronald Garan Jr. were headed back outside for their second spacewalk in three days to outfit Japan's billion-dollar Kibo lab, which was delivered by the shuttle.

Their objective: to set up TV cameras around Kibo's robotic arm. They will also remove thermal covers from the robot arm and do some advance work for a nitrogen-gas tank replacement scheduled for their third and final spacewalk this weekend.