Most of Earth's water came from asteroids, not comets - Fox News

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Most of Earth's water came from asteroids, not comets
Fox News
Rosetta's navigation camera obtained the four images in this mosaic on Dec. 7, 2014, from a distance of 12.2 miles (19.7 km) from the center of Comet 67P/Churyumov-Gerasimenko. (ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0). Asteroids, not comets, may ...
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