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Curiosity Rover Spots Weird Tube-Like Structures on Mars

In browsing the first new batch of 2018 photos taken by the Curiosity rover's Mars Hand Lens Imager (MAHLI), researcher Barry DiGregorio speculated on whether the Red Planet robot found trace fossils on Mars. DiGregorio is a research fellow for the Buckingham Centre for Astrobiology in the United Kingdom and author of the nonfiction books "Mars: The Living Planet" and "The Microbes of Mars."

"They look remarkably similar to Ordovician trace fossils I have studied and photographed here on Earth," DiGregorio told Inside Outer Space. "If not trace fossils, what other geological explanations will NASA come up with?"

Vasavada reported that the eye-catching features are very small, probably on the order of a millimetre or two (0.04 to 0.08 inches) in width, with the longest of the features stretching to roughly 5 millimetres (0.2 inches). "So, they are tiny," he told Inside Outer Space.

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