One man is claiming that the intriguing Martian rock photographed recently by NASA's Opportunity rover isn't a rock at all, but a living thing, and is now suing the space agency for neglecting to investigate further.Dubbed the "jelly donut" by Opportunity lead scientist Steve Squyres, the rock is white on the outside with a red center. Â And while NASA scientists admitted it was "unlike anything we have seen before," they definitely determined it to be a rock.
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