SAN FRANCISCO (Reuters) - A NASA rover scouting for signs of past water on Mars has found the strongest evidence yet -- a vein of gypsum, a mineral deposited by water, protruding from an ancient rock.
Reuters: Top News, Reuters
Thu, 12/08/2011 - 6:13pm
SAN FRANCISCO (Reuters) - A NASA rover scouting for signs of past water on Mars has found the strongest evidence yet -- a vein of gypsum, a mineral deposited by water, protruding from an ancient rock.