Huge Martian Crater 'Korolev' Appears Topped With Miles Of Pristine Snow 

New images of Mars show an enormous crater that measures nearly 51 miles across and is filled with ice year-round, the European Space Agency reported.

Known as the Korolev Crater, located near the Martian north pole, it's topped by "what appears to be a large patch of fresh, untrodden snow – a dream for any lover of the holiday season," said a statement by ESA, which released the images Thursday...read more