NASA Goddard put out an animation showing the size of the largest black holes we know of. And it's gigantic. It's pretty much incomprehensible to the human mind. You can't actually imagine it. You /think/ you might, but you can't.

YouTube: NASA Animation Sizes Up the Biggest Black Holes
https://www.youtube.com/watch?v=jU1DsipURcM

#science #astronomy #blackhole #huge #video