The 4 Possible Types of Parallel Universes... and Can We Visit Them?

Most people have heard of parallel universes, but there are actually four possible types postulated by physicists. 

In the last decade, parallel universes–a thought experiment once reserved for geeks on rainy (or sunny) weekends–has become something of buzzword, up there with dark matter and time travel in its capacity to captivate. It used to be that no one actually believed in parallel universes, they just thought it was cool to think about. Then something called string theory (or the ‘branes’) came around and pistol-whipped us with the notion of other dimensions wrapped into the fabric of our own reality. The shocks to the system didn’t stop and, in recent years, scientists have actually begun to look for physical evidence of the ‘multiverse’. Read more