I like to try a new subject, to see if it's interesting enough to get some questions so I can try to answer them with all I know (because I like that).

I would like to explain how vast space actually is.....
you know the speed of light? (299999,9894 kilometer per second)
The oldest light (it's radiation) is from 5.43 milliard years ago (from the big bang) and so it theoretically is the edge of the universe.
You know black holes are imploded stars after they have burned all their "fuel".
they get to a critical mass and then collapse because of their own gravity, and pulls even light into the nothingness.

A more particularly interesting thing is a singularity; that is like black hole without the restricion of being a star and it's fundamentals are different. Now imagine it all the things (matter, time, gravity) litteraly everything into one endless compact point, so there is no "around" anymore.

If you want to know more PM me and I will post another one of this subject.