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Comet Breakthrough of the Year + People's Choice


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Comet 67P/Churyumov-Gerasimenko

Comet 67P/Churyumov-Gerasimenko has begun to emit jets of water vapor that is unlike the water found in Earth's oceans.

Credit: ESA/Rosetta/Navcam

This year's breakthrough captured the public's imagination with a series of hard-won pictures, beamed to Earth from a place beyond Mars.

From Science Magazine
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