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The crew of the International Space Station have been forced to reduce power after half the cooling system suddenly shut down over the weekend.
Nasa officials insisted the three Americans and three Russians aboard were not in danger.
Urgent spacewalk repairs are being discussed for this week.
Without thermal controls,temperatures on the ISS‘s Sun-facing side can soar to 121C (250F),plunging to minus 157C (-250F) on the dark side,Nasa says.
“There might be a comfortable spot somewhere in the middle of the station,but searching for it wouldn’t be much fun,” a statement on its website adds.
The station is now operating on a single string,the Associated Press reports,and has no safeguard in case of further cooling system failures.
Alarms sound
Trouble arose on Saturday night when one of the two ammonia-fed cooling loops shut down,triggering alarms throughout the ISS.
The two ammonia lines ensure that all the station‘s electronic equipment does not overheat.
Astronaut Tracy Caldwell Dyson set in motion equipment shutdown procedures and,with crewmate Douglas Wheelock,installed a jumper cable to keep all the rooms cool.
The Global Positioning System circuit,several power...