Article is very close to some tabloid IMHO. Not much actual theories, but a lot of bold statements like "Alien Robots That Left Their Mark on Mars" without much explanation.
Mystery Rock 'Appears' in Front of Mars Rover
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Re: Mystery Rock 'Appears' in Front of Mars Rover
#92Didn't this jelly doughnut appear a few days later? I thought that mars has an active environment i.e. dust storms and an atmosphere. So stuff is bound to move?
Do you see rocks the size of a donut blowing around on Earth as well? No. Sure we have more gravity, but also a thicker atmosphere. I don't think they blow around on Mars either.
How about the rocks that move in the death valley the size of 10 x donuts. Also vertical swirling column of air could move it. And we know those exist on Mars since those were responsible for cleaning Spirit's solar panels (rover).