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European Scientists Face Decisions as Comet Probe Batteries Run Down

European Space Agency scientists will on Friday decide whether to try a risky drilling procedure to anchor an exploration probe to the surface of a comet before its batteries run out. The lander, released by the Rosetta spacecraft on Wednesday after a 10-year odyssey 500 million km (300 million miles) from Earth, floated away from its planned landing site after harpoons designed to hold it down failed to deploy. The probe is now resting precariously on two out of three legs in the shadow...

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