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NASA Plans Spacewalks to Repair Space Station

NASA has decided that two American astronauts will conduct a series of space walks, starting this week, to fix a broken cooling system.One of the station's two ammonia cooling systems shut down last Wednesday, forcing astronauts to power down unnecessary equipment and suspend some of the laboratory's science experiments. NASA says the six-member crew is not in any danger. But after engineers on the ground failed to devise ways to bypass a faulty valve inside the pump, located...

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