NASA / Discovery

A camera attached to the space shuttle Discovery's robotic arm shows astronaut Steve Robinson going under Discovery to remove gap fillers Wednesday. (AP Photo/NASA TV)

Wake-up call

A photo taken by a camera on the International Space Station shows the docked space shuttle Discovery's payload bay. (AFP/NASA-HO/File) and US space shuttle Discovery Mission Specialists Stephen Robinson (L) and Soichi Noguchi are seen aboard the shuttle just before their July 30 spacewalk. Robinson carried out a risky operation to clear two fibres hanging from the Discovery shuttle. (AFP/NASA/File)