After seven months of not-so-voluntary deep sleep, the comet lander Philae has finallywoken up in earnest. The European Space Agency got in contact with its explorer for 85 precious seconds late on June 13th, receiving 300-plus data packets that shed light on what happened following the machine’s bumpy touchdown. As it turns out, Philae came back to life at least temporarily during its forced hibernation — it just couldn’t get back in touch with its Rosetta host ship and thus the ground crew.
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https://www.engadget.com/2015/06/14/philae-comet-lander-wakes-up/
