Like part of a cosmic Russian doll, our universe may be nested inside a black hole that is itself part of a larger universe.
In turn, all the black holes found so far in our universe—from the microscopic to the supermassive—may be doorways into alternate realities.
http://news.nationalgeographic.com/news ... wormholes/
Related articles:
Before Big Bang: Light Shed on "Previous Universe"
New Proof Unknown "Structures" Tug at Our Universe
Dark Energy's Demise? New Theory Doesn't Use the Force
Gamma-Ray Burst Caused Mass Extinction?
Are Wormholes Tunnels for Time Travel?
Mysterious radio waves emitted from nearby galaxy









