“If space is truly infinite,” observes Dan Hooper, head of the Theoretical Astrophysics Group at the Fermi National Accelerator Laboratory, in At the Edge of Time, “the implications are staggering. Within an infinite expanse of space, it would be hard to see any reason why there would not be an infinite number of galaxies, stars, and planets, and even an infinite number of intelligent or conscious beings, scattered throughout this limitless volume. That is the thing about infinity: it takes things that are otherwise very unlikely and makes them all inevitable.”
The universe we see around us is a tiny sliver of a much larger multiverse.The multiverse theory says that what we have all along been calling “the universe” is in fact nothing of the kind. Rather, it is but an infinitesimal fragment of a much larger and more elaborate system—an ensemble of “universes,” or of distinct cosmic regions according to Davies, Paul. in The Goldilocks Enigma: Why Is the Universe Just Right for Life?
Eternal inflation is one mechanism for generating a multiplicity, or as Davies describes it,”an ensemble of universes, known collectively as a multiverse. Individual universes within the multiverse could be very different from one another. Only a small fraction, such as the Universe harboring Earth, might be fit for life.”
To read more, click here.