Episode Details

In space, inky darkness between blinding points of light does a great job. It hides black holes – gaping, hungry, and scary. Their blackness makes it really difficult for astronomers to find detailed information about these space monsters.

There's a hypothetical type of black hole called primordial that could be filling the universe. As in, thousands of them crammed together in clusters the size of the distance between our Sun and the nearest star!

Even more bizarre: these black holes could actually be the mysterious dark matter that's baffled scientists for decades! Astronomers know its exists and that it makes up 80% of the universe. But they can't find a single particle of the stuff. Maybe because the "stuff" was a black hole the entire time!

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