The Cosmos

I have read this:

      “It seems impossible that you could get something from nothing, but the fact that once there was nothing and now there is a universe is evident proof that you can. They believe that they can look back to 10-43 seconds or one ten million trillion trillion trillionths of a second after the moment of creation, when the universe was still so small that you would have needed a microscope to find it.

 
      The universe underwent a sudden dramatic expansion. It inflated – in effect ran away with itself, doubling in size every 10-34 seconds. The whole episode may have lasted no more than 10-30 seconds – that’s one million million million million millionths of a second – but it changed the universe from something you could hold in your hand to something at least 10,000,000,000,000,000,000,000,000 times bigger(100 billion light years across). According to theory, at one-ten-millionth of a trillionth of a trillionth of a trillionth of a second, gravity emerged.
 
      If gravity were fractionally stronger or weaker, if the expansion had proceeded just a little more slowly or swiftly – then there might never have been stable elements to make you and me and the ground we stand on. Had gravity been a trifle stronger, the universe itself might have collapsed. Had it been weaker, however, nothing would have coalesced. This is one reason why experts believe that there may have been trillions and trillions or possibly an infinite number of universes.”
 
      Now, the question that has occurred to all of us at some point is: what would happen if you traveled out to the edge of the universe and, as it were, put your head through the curtain, where would your head be if I were no longer in the universe? What would you find beyond? (The answer? Accordingly? I’ll just keep it)