You’ve got to love it when highly respectable, real science collides with science fiction as in this recent study suggesting that black holes may actually be worm holes that connect our universe to others.
This appears to be consistent with the provocative ideas in string cosmology that suggest the possibility of many parallel universes existing together without much interaction between them. Some string theorists think that gravity – a very weak force in terms of the universe – may represent a force that exists simultaneously in several universes and thus could possibly be used to communicate between them.
It’s very hard to wrap your head around ideas relating to dimensions in space that are not what we commonly experience as the three physical dimensions plus time, but these extra dimensions are becoming a key part of the way physicists describe the underpinnings of the universe. Perhams more importantly, they are … fun and educational!