While many people may spend Christmas Eve doing last-minute shopping, two American astronauts have a more challenging matter to attend to Tuesday.
In orbit more than 200 miles above Earth, flight engineers Rick Mastracchio and Mike Hopkins embarked on a spacewalk on Tuesday morning to repair part of the International Space Station’s cooling system. It is the second Christmas Eve spacewalk in history, according to NASA.
The space station’s life support system remains up and running, but operations were cut back as a result of the problem, NASA said. The two astronauts spent about 5 1/2 hours outside the space station on Saturday working to remove the problematic pump .