After traveling over the Martian surface for more than 30 days to reach the Bonneville crater, NASA’s Spirit rover peeked over the rim and found that the crater floor looks very much like the terrain it has already passed over, researchers said yesterday.
Notably absent in the 220-yard-diameter crater were rock outcroppings like those found by Spirit’s twin, Opportunity, halfway around Mars in a much smaller crater at Meridiani Planum.