If you left your car in the driveway for a week and came back to see that the odometer had a few more miles on it than when you left it, you'd be understandably puzzled. Well, that's a bit like what's puzzling cosmologists right now. They know what the universe looked like right after the Big Bang, and they know the laws of physics it followed to get to the state it's in right now. And, well, the state it's in right now isn't quite right. Something is missing, and some scientists think it's dark matter. The dark matter that was there in the beginning may have vanished — and that means that the dark matter we still have might vanish, too.
Something Doesn't Add Up
A Shot in the Dark
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Written by Ashley Hamer April 11, 2018
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