kqedscience:

What are those things? They were first seen in 1998; they don’t look like anything we have here on Earth. To this day, no one is sure what they are, but we now know this: They come, then they go. Every Martian spring, they appear out of nowhere, showing up — 70 percent of the time — where they were the year before. They pop up suddenly, sometimes overnight. When winter comes, they vanish.”

Read more from NPR’s Robert Krulwich.

A – Now I’m not saying David Bowie was right about spiders from Mars, but….

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