Wormholes | Earth, Solar System and Universe.

A worm hole is a tunnel that connects two points in space-time, or two parallel universes. Never has been one and is not proven to exist, although they are mathematically possible.
They are called so because they resemble a worm that goes through an Apple inside to the other end, rather than take it out. Thus, Wormholes are shortcuts in the fabric of space-time. Allow unite two very distant points and arrive more quickly than if you had the universe at the speed of light.
According to the theory of general relativity of Einstein, Wormholes can exist. They have an entrance and an exit in different space or time points. The tunnel that connects them is in hyperspace, which is a dimension that is produced by a distortion of time and gravity.
Einstein and Rosen raised this theory to study what was happening inside of a black hole. Why are also called Einstein-Rosen bridge.

There are two kinds of worm holes:
- Intrauniverso: connecting two points away from the Cosmos.
- Interuniverso or Schwarzschild holes: connect two different universes.

Can you travel in time?

One thing is that there are holes of worm and quite another to be used for travel in space and time.
The novel "Contact", Carl Sagan proposed a trip through a wormhole. This led to much believe it possible. But it is only science fiction. Scientists believe that a worm hole has a very short life. Opens and closes quickly. Matter would be trapped in it or, although I got out the other end, could not return. Obviously, we could not choose where we would take.
According to general relativity, it is possible to travel to the future, but not to the past. If you could travel to the past, we could alter history, for example, making that we were never born. It would be impossible.
Translation for educational purposes authorized by: Astronomía: Tierra, Sistema Solar y Universo