1 julio 2015
The European Space Agency’s Rosetta spacecraft first began orbiting comet 67P/Churyumov-Gerasimenko in August 2014. Almost immediately, scientists began to wonder about several surprisingly deep, almost perfectly circular pits on the comet’s surface. Now, a new study based on close-up imagery taken by Rosetta suggests that these pits are sinkholes, formed when ices beneath the comet’s surface sublimate, or turn directly to gas.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/PHlDN2yy2kY/150701133350.htm
