Old rover finds new evidence of water on Mars
10-year-old Opportunity reveals chemistry that could have supported life

CRATER VIEW The 10-year-old Mars rover Opportunity casts a shadow over the planet’s Endeavour Crater, which holds traces of ancient water. The rover created this false-colored mosaic image in 2012 by combining pictures taken through different filters of its panoramic camera.
NASA/JPL-Caltech/Cornell/Arizona State Univ.