But if wormholes exist, they will work as a time machine too. Just imagine that you will be able to travel millions of light-years in a few minutes. This means that you can reach there even before light. If the light didn’t reach there, then basically you have jumped from one place in time to another. Now it’s a different thing that if wormholes do exist, if wormholes are to be considered real.
The first question is how will the opening of the wormhole be formed? We will need an extremely heavy gravitational force here. Where can we find this gravitational force? A black hole. Einstein and his assistant Rosen theorized that only black holes can have such a gravitational force that they can open up these tunnels of wormholes. Everything is attracted to black holes. Everything will be attracted to it and will flow through this wormhole through this tunnel.
But the next question is what will be on the other side of this tunnel? If there is a black hole on the other side then there will be no way to get out of this tunnel. You will be trapped inside this tunnel. Basically, in that case, this wormhole will not be a tunnel to go from one place to another but rather it will be a trap. There should be something on the other side which is the opposite of a black hole in every sense.
Something which is as powerful as black holes but works in the exact opposite way. Something that instead of attracting things towards itself, sends things away from itself. So that an exit point can be created. And here, enters in our story, the White Holes.
