(Fox News) It was a complete unknown -- it was a rolling stone.
A mystery rock that appeared before NASA's Opportunity rover in late January -- and bore a strange resemblance to a jelly donut -- is no more than a common piece of stone that bounced in front of the cameras, NASA said Friday.
The strange rock was first spied on Jan. 8, in a spot where nothing had sat a mere two weeks earlier. Dubbed "Pinnacle Island" by NASA scientists, it was only about 1.5 inches wide. But the rock's odd appearance -- white-rimmed and red-centered, not unlike a jelly donut -- made many sit up and take notice.
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Now researchers with NASA's Jet Propulsion Laboratory at the California Institute of Technology have finally cleared up the mystery.
