If you put your hand up in the night, away from L.A., and look at a dark spot of the sky the size of a dime—with a large enough telescope, you could see 100,000 galaxies there.

Stars explode once every 100 years per galaxy. So in that little region with 100,000 galaxies, on a given night you’ll see ten stars explode.

The universe is huge, and old, and rare things happen all the time.

Lawrence Krauss

minute 17:30 of this lecture


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