The Multiverse: Exploring the Possibility of Multiple Universes.

Physicists are exploring the possibility that our universe is just one of many in a multiverse, each with different physical laws and values of fundamental constants. The values of these constants are in a range that allows complex systems such as stars, planets, carbon, and ultimately humans to evolve. If we tweaked some of these parameters by just a few percent, it would render our universe lifeless. The multiverse theory suggests that statistically speaking, a few universes should be life-friendly. The concept of the multiverse is still controversial, but physicists are open-minded to the possibility of an imminent grand cosmological revolution.