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Fresh spacewalk in vexed mission
Astronauts from the International Space Station have begun a third spacewalk to solve the latest technical glitch.
They are trying to fix a jammed joint that is supposed to keep the station's solar panels pointed towards the sun. Scientists are still struggling to repair a new recycling system intended to convert astronauts' urine into drinking water. During a previous space walk, the astronauts accidentally lost a tool box worth more than $100,000 ( |