Reference : New Scientist, 19 July 2014, page 42
We all know about black holes. Those things that have so much gravity that they suck everything in, including light. Nothing escapes, but where does it all go?
Some astronomers think there may be an opposite to black holes, called white holes. Where black holes suck, white holes spew. White holes blaze with light rushing out, and possibly a whole lot of other stuff too. There are suggestions that white holes may be connected to black holes via wormholes, with the possibility that a black hole in one universe may be connected to a white hole in another, meaning that anything sucked into a black hole will travel through a wormhole to a different universe.
There is just one small problem with this idea. No one has ever seen a white hole. However, that may change. New radio telescopes may have the resolution to discover a white hole at great distance. Already we know of galactic nuclei that are much brighter than they should be. Possible white holes? With enough radio telescope resolution we might detect a small bright spot at the centre of these galaxies.
Or is it possible that some gamma ray bursters might be white holes?
If we discover that there are, in fact, white holes and we can learn more about them via those new telescopes, might that prove that there are many universes? What will that mean for our appreciation of reality?