Flying high above the Earth, the International Space Station could be in for a major repair.<br/> <br />NASA officials say they are working to fix a problem with the cooling system.<br/> <br />One of the cooling pumps automatically shut down Wednesday after detecting abnormal temperatures.<br/> <br />SOUNDBITE: KENNY TODD, ISS MISSION OPERATIONS INTEGRATION MANAGER, SAYING:<br/> <br />"We haven't lost any primary functionality. There is some redundancy that we are down right now. But, again, that is not something that I would call critical to day to day station operations."<br/> <br />NASA officials say the problem does not pose a risk to the six astronauts aboard the space station.<br/> <br />Engineers will determine if a spacewalk is necessary to replace the faulty cooling pump.<br/> <br />SOUNDBITE: KENNY TODD, ISS MISSION OPERATIONS INTEGRATION MANAGER, SAYING:<br/> <br />"If in the near term discussions, it doesn't look like there's anything that's on the horizon, then we'll look at other options that might have to be c
