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PHILADELPHIA (AP) — If you gazed up into the night sky on Christmas you likely saw something rare. And, no, it won't be Santa. He and his reindeers will have already zoomed across the horizon. On Christmas Day there was a full moon, the first since 1977.

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BERLIN (AP) — Waking up after almost three years of hibernation, a comet-chasing spacecraft sent its first signal back to Earth on Monday, prompting cheers from scientists who hope to use it to land the first space lander onto a comet.