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nr crane mark kelly philae comet landing_00003617.jpg
nr crane mark kelly philae comet landing_00003617.jpg

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    Mark Kelly: Philae mission 'incredible'

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Mark Kelly: Philae mission 'incredible'

CNN's Rachel Crane and former astronaut Mark Kelly explain the good and bad news of the Philae probe's comet landing.

Mark Kelly: Philae mission 'incredible'

CNN's Rachel Crane and former astronaut Mark Kelly explain the good and bad news of the Philae probe's comet landing.