Whitewater Lake is the large flat rock in the top half of the image. From left to right it is about 30 inches (0.8 meter) across. The dark blue nubby rock to the lower left is “Kirkwood,” which bears non-hematite spherules. Credit: NASA/JPL-Caltech/ Cornell Univ./Arizona State Univ. Steve Squyres, Principal Investigator for the Mars Explorations … Continue reading "Opportunity Rover Glimpses Conditions Suitable for Life"