A European probe has begun drilling into a comet to collect scientific data, but mission controllers said Friday that battery issues may make it impossible — at least for now — to access that information. The Philae lander on Wednesday became the first spacecraft to touch down on a comet and has since sent its first images from the surface of the body, known as 67P. But two harpoons that should have anchored the washing machine-sized Philae to the surface did not properly deploy when it hit the comet.
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