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Weird Geological Features Spied On Mars

astroengine writes "The High-Resolution Imaging Science Experiment (HiRISE) camera carried by NASA's Mars Reconnaissance Orbiter has spotted a strange geological feature that, for now, defies an obvious explanation. Found at the southern edge of Acidalia Planitia, small pits with raised edges appear to hug a long ridge. So far, mission scientists have ruled out impact craters and wind as formation processes, but have pegged the most likely cause to be glacial in nature."

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  1. Re:we don't know by nospam007 · · Score: 5, Funny

    "Yea, I mean, seriously 4.4 billion years old? It could just as easily be 4.5 or 4.3 billion years old."

    Precise Dating is everything.

    Some tourists in the Chicago Museum of Natural History are marveling at the dinosaur bones. One of them asks the guard, "Can you tell me how old the dinosaur bones are?"

    The guard replies, "They are 70 million, four years, and six months old."

    "That's an awfully exact number," says the tourist. "How do you know their age so precisely?"

    The guard answers, "Well, the dinosaur bones were 70 million years old when I started working here, and that was four and a half years ago."