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Neil deGrasse Tyson Reveals The Scientific Mystery That Keeps Him Up At Night

Celebrity scientist Neil deGrasse Tyson might seem like he knows everything there is to know about the universe. But there's a lingering scientific mystery that keeps him up at night, and it's not the possibility of alien lifeforms. No, it's a problem that could unravel everything we think we know about the cosmos.

It's a quandary that's impossible to sum with a few sentences, so check out the video above if you really want to find out about the earth shattering solar-system shattering mystery. But don't watch if you're susceptible to anxiety.

"I don't want to be blamed if you cannot get to sleep tonight," Tyson warned Stephen Colbert, who admitted that he would definitely be up late after Tyson revealed the galactic conundrum.

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