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Why Comets Are Like Deep Fried Ice Cream


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Comet 67P/Churyumov-Gerasimenko

Comet 67P/Churyumov-Gerasimenko is seen here in an image captured by the Rosetta spacecraft. The mission's Philae lander hit the surface with a big bounce, demonstrating the comet's surface is hard.

Credit: ESA/Rosetta/NAVCAM

Astronomers tinkering with ice and organics in the lab may have discovered why comets are encased in a hard, outer crust.

From Jet Propulsion Laboratory
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