There aren’t many fans of the sport of curling on Earth, even during the Winter Olympics. Could frustrated players have taken their rocks and moved to Mars? So far, that’s one of the better explanations for a strange phenomenon spotted on the surface of the Red Planet by Google Mars observers – skid marks that look like the result of rocks sliding across the ground. What else could it be?
The first thought is that the slide marks resemble those made by the sailing stones of the Racetrack Playa in Death Valley. That mystery was solved in 2014 (So They Say)when time-lapse cameras showed water freezing into windowpane ice under the 700 pound stones allowing light winds to move them around.(Then how does the same thing happen on our Moon ?) However, the Earth sailing stones move in zigzag patterns while the Martian rocks slide in lockstep.
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