How Deep Does the Multiverse Go? 202
StartsWithABang writes Our observable Universe is a pretty impressive entity: extending 46 billion light-years in all directions, filled with hundreds of billions of galaxies and having been around for nearly 14 billion years since the Big Bang. But what lies beyond it? Sure, there's probably more Universe just like ours that's unobservable, but what about the multiverse? Finally, a treatment that delineates the difference between the ideas that are thrown around and explains what's accepted as valid, what's treated as speculative, and what's completely unrelated to anything that could conceivably ever be observed from within our Universe.
It's turtles all the way down (Score:5, Interesting)
It's turtles all the way down.
Re:I don't understand... (Score:5, Interesting)
The speed of light through space is distinct from the rate at which the universe itself expands. Weird fun things ensue. :p