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If your question is pertinent to - Rosetta Lander, and - Comet 67P/Churyumov–Gerasimenko please apply this tag

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Why did Philae the comet lander bounce?

After Rosetta released the lander, it bounced several times upon hitting the comet's surface and its two harpoons did not deploy. Why did the Philae's grabbing mechanism fail?
Brian Leeming's user avatar