Exposed Water Ice on Comet Reveals Clues About Its Evolution
Wednesday, January 13, 2016 - 13:41
in Astronomy & Space
Europe's Rosetta spacecraft has spotted big grains of water ice on the surface of Comet 67P/Churyumov-Gerasimenko; the grains may have formed after heat from the sun vaporized buried water ice, which then recondensed and was redeposited.