FILE - This May 23, 2010 image provided by NASA shows the International Space Station with the Earth in the background made from the space shuttle Atlantis after undocking. On Wednesday, Jan. 8, 2014, NASA said the White House was poised to announce an extension of the space station's lifetime until at least 2024. The previous end-of-life date was 2020. (AP Photo/NASA)
A spacewalk designed to replace a non-functioning computer has ended Wednesday (4/23) without incident.
The two Americans on board, Rick Mastracchio and Steven Swanson undertook the 1 hour 36 minute EVA to bolt in a new computer that is a critical backup outside the International Space Station. The computer failed nearly two weeks ago. The prime computer has been working fine, but NASA wanted to install a fresh spare as soon as possible.
The spare computer is a compact 50-pound box. Engineers don't know why the original failed. The astronauts found no signs of damage and the installation took place without incident.