50. A Vacuum of Nothingness
When we talk about space, we talk about a great empty expanse of absolutely nothing. But really, there is something in it, just not a lot. No, the one who really takes home the prize for a whole lot of nothing is a black hole. Black holes bend time, space, and light in such a fascinating way.

The craziest thing about it has to be how time simply slows down in its void. If you were to get caught in a black hole, time would slow so much for you that everything around you would speed up. You could potentially watch the whole universe speed up and die.