"Our universe may exist inside a black hole. This may sound strange, but it could actually be the best explanation of how the universe began, and what we observe today."
Like shown in the picture, the top bottle being the black hole and the bottom our universe, filling from the above through a wormhole.
Fascinating theory.
Read more http://phys.org/news/2012-05-black-hole-universe-physicist-solution.html
Via Guillaume Decugis