A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying

Now... How did you even get into this situation?

You now find yourself slowly floating towards a black hole in the distance... Somehow, you can breathe just fine in space, and... You can't hear anything, vacuum of space and all.

The black hole is getting closer now...