SPACE - Curiosity confirms origins of Martian meteorites

Earth's most eminent emissary to Mars has just proven that those rare Martian visitors that sometimes drop in on Earth—a.k.a. Martian meteorites—really are from the Red Planet. A key new measurement of Mars' atmosphere by NASA's Curiosity rover provides the most definitive evidence yet of the origins of Mars meteorites while at the same time providing a way to rule out Martian origins of other meteorites ...

http://phys.org/news/2013-10-curiosity-martian-meteorites.htm