Science Forums 2

[dgeake]

I did say "is sometimes described" etc. I did not go to a single sorce, or even just to sources on the internet. I just cited a URL which I thought margot would find interesting, because I did.

Unless there is such a thing as a white hole, you would never be able to exit a wormhole. There are many other things which almost certainly make wormholes unacceptable for travel even if they do exist, such as the stability of the conduit, it's dimensions, the incredible tortous warping of spacetime. They do make interesting subjects on which to speculate on however.

1. Perhaps white holes do exist, but in some other universes with different natural laws.

2. Some have theorized that a wormhole could be used as a timemachine.

3. We do not have a quantum description of gravity yet, so we know that our speculations at extremely small dimensions and high degrees of spacetime warping are actually wild guesses at present. Reliance on exotic matter is an interesting device, but just that currently, a mathematical device, as is true for almost any discussion about wormholes.