text: Mars Hills, Crater Yield Evidence of Flowing Water The hills of Mars yielded more tantalizing clues about how water shaped the Red Planet in tests by NASA (news - web sites) #39;s robotic geologist, Spirit, while its twin 
inputs: Mars Hills, Crater Yield Evidence of Flowing Water The hills of Mars yielded more tantalizing clues about how water shaped the Red Planet in tests by NASA (news - web sites) #39;s robotic geologist, Spirit, while its twin 