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Something Strange Is Slowly Spreading Across Mars, and Scientists Don’t Know What It Is

A massive dark patch on Mars has been expanding for decades, and scientists still aren’t sure why.

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Scientists are tracking a massive dark patch slowly spreading across the surface of Mars, specifically within a huge basin called Utopia Planitia.

While this may sound like the expository info dump from the opening seconds of a trailer for a movie about the alien invasion, it likely has a logical, non-scary explanation. The problem is, researchers don’t yet know what that explanation is. So, for now, it’s best not to let your imagination run too far ahead of the evidence.

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