If equipment breaks down on the moon, ordering a replacement part through the mail isn't exactly an option. But what if astronauts could simply print out what they need, using local materials?
NASA has found four more cracks in the Discovery shuttle's fuel tank, but says it believes it can repair them in time to launch on February 3 as planned.
NASA is pressing ahead with last-minute repairs to the Discovery space shuttle in order to hit the planned November 1 launch date.
Two space station astronauts are currently conducting their third and possibly final spacewalk to repair the station's faulty cooling system.
The International Space Station's cooling system has shut down, forcing crew to plan repairs during a spacewalk later this week.