Old Mars rover finds more proof of possible life

By Megan GannonSpace.comThe venerable Mars rover Opportunity, the older and smaller cousin of Curiosity, has discovered another water-weathered rock hinting that the Red Planet could have supported life in its ancient past, NASA officials said.In its last days exploring "Cape York," a site on the rim of the giant Endeavour crater, the Opportunity rover examined a fractured rock unlike any it has s...