Saturday, 7 May 2011

Doctor Who Science Fact — Beyond the Universe

After "Black Spot" the latest episode of Doctor Who takes Team TARDIS further than they've ever been before — beyond the universe, in some sort of pocket dimension that only Neil Gaiman could conceive. But what lies beyond our imagination? Where does the edge of the world extend into the black chasm of non-reality?

Our friends over at io9 have compiled five incredibly weird, and probably wrong, theories about "what lies outside the universe".
Is it possible that something else exists beyond existence? Yes. Here are five theories about what that "something" might be. 
The "outside the universe" question gets tricky right off the bat, because first you have to define the universe. One common answer is called the observable universe, and it's defined by the speed of light. Since we can only see things when the light they emit or reflect reaches us, we can never see farther than the farthest distance light can travel in the time the universe has existed. 
That means the observable universe keeps getting bigger, but it is finite – the amount is sometimes referred to as the Hubble Volume, after the telescope that has given us our most distant views of the universe. We'll never be able to see beyond that boundary, so for all intents and purposes, it's the only universe we'll ever interact with.
In order, the five theories are:
  1. Beyond the Hubble Volume
  2. Dark Flow
  3. Infinite Bubbles
  4. Black Hole Spawning
  5. Many Parallel Universes
And you can read all of these theories in detail. If you're interested in this topic, make sure you explore io9's sources at the bottom of the page.

1 Comments:

Mike Jackson said...

My theory is that Quantum Foam makes the Doctor roam.