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NASA Spots 'Pimples' on Mars, and They Have Quite an Origin Story

But no need to reach for the benzoyl peroxide just yet.

Amanda Kooser
Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto.
Amanda Kooser
2 min read
Processed enhanced color image of Mars surface looks like a group of pimples, but is actually a set of impact craters.
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Processed enhanced color image of Mars surface looks like a group of pimples, but is actually a set of impact craters.

You can see why the HiRise camera team likened this view of the Mars surface to pimples.

NASA/JPL-Caltech/UArizona

I've seen weird-looking things on Mars, particularly when it comes to rocks shaped like a cat or a butt, but I never expected an image from the red planet that made me think "acne outbreak." Big thanks to NASA's Mars Reconnaissance Orbiter for putting that unsettling vision in my mind.

The MRO HiRise camera team at the University of Arizona shared an eye-catching view of the Martian surface as a picture of the day on Wednesday. At first glance it looks like a white landscape with upward white bumps emerging from a dark red patch of ground. Yes, it looks like pimples.

There's a bit of an optical illusion at play here. "Woah, no need to reach for the benzoyl peroxide or pimple patches," the HiRise team wrote. "These reddish and white patches are actually depressions (not hills), still covered in seasonal carbon dioxide ice on Mars' South Polar layered deposits." 

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Here's a similarly illusion-y pit/plateau image from Mars that will challenge you to see it as an indentation and not a raised ridge.  

Mars is constantly peppered by rocks. NASA's InSight lander mission (which is now in its final days) has tracked recent meteoroid impacts with its marsquake-sensing seismometer.  

MRO captured the image in August. It's in good company with some of the orbiter's other funky sightings, like this Pac-Man crater and this landscape that looks like a Pink Floyd album cover

The craters are noteworthy for appearing as a cluster as opposed to a single crater. The grouping suggests an incoming space rock broke apart on its way down through the planet's atmosphere, leaving behind the scattershot depressions cosplaying as whiteheads. Mars may have to worry about incoming rocks, but it doesn't have to worry about ordering an industrial supply of Clearasil.