Light-colored mounds of a mineral deposited on a volcanic cone may preserve evidence of one of the most recent habitable microenvironments on Mars. One of the best preserved deposits ever found, says scientists

A growing bounty of images from NASA's Mars Reconnaissance Orbiter reveals that the timing of new Save activity in one type of the enigmatic gullies on Mars implicates CO₂ frost, rather than water, as the agent causing fresh flows of sand.

The ground where NASA's Mars Exploration Rover Spirit became stuck last year holds evidence that water, perhaps as snow melt, trickled into the subsurface fairly recently and on a continuing basis.

2 weeks ago, the Mars-rover Opportunity spotted a rock that was suspected to be a meteorite, close to its route. Now after it's inspection of the meteorite, we can reveal close up images of the 45cm rock