Oxygen-rich
Latest
Curiosity finds evidence that Mars was once rich in oxygen
Mars may have had a much more Earth-like atmosphere rich in oxygen, according to JPL's Curiosity team. Using its laser-firing instrument in the Gale Crater, the intrepid rover found rocks with manganese oxide, which requires oxygen to form. On Earth, such minerals marked a period when our atmosphere became much more oxygen-rich, largely because of microbes. "Now we're seeing manganese oxides on Mars, and we're wondering how the heck these could have formed," says Los Alamos scientist Nina Lanza.
