June 20, 2013
Early Mars Atmosphere May Have Been Oxygen-Rich
Paul Rincon, BBC News
Mars' atmosphere could have been rich in oxygen four billion years ago - well before Earth's air became augmented with the gas.
That is the suggestion put forward by the author of a study in Nature journal, which outlines an explanation for differences between Mars meteorites and rocks examined by a robot rover.
TAGGED: Oxygen, Atmosphere, Mars