Buried water in Martian history The relatively ... of liquid water at some periods during ongoing climate cycles. Spirit, its rover twin Opportunity and other NASA Mars missions have found ...

[Related: Trapped Mars Rover Finds Signs of Buried Martian Water in Recent Past] Spirit: Iron-magnesium carbonates at the Comanche outcrop, Husband Hill, Gusev Crater, showing that water ...

The earliest the six-wheeled Spirit rover will roll off the spacecraft ... Arvidson said a volcanic eruption could have buried the dry lake bed with lava, which was then fragmented by blows ...

“At Purgatory, all six wheels were just about completely buried,” says Steve Squyres ... Meanwhile, on the other side of the planet, the Spirit rover is also stuck in one place – but ...