XPost: sci.physics.relativity   
   From: sylvia@email.invalid   
      
   On 21-Oct-24 1:40 am, The Starmaker wrote:   
   > kazu wrote:   
   >>   
   >> essentially what i am asking is, is there something outside? or   
   >> can there even be outside??   
   >>   
   >> is the universe like an egg and we are the yoke??   
   >   
   >   
   > The earth is like an egg. But you first have to boil the egg for   
   > 3 minutes..then remove the earth crust, and cut the egg in half and you   
   > will see the earth's core.   
   >   
   >   
   The current thinking is that the universe is infinite in spatial extent,   
   but only 13.7 billion years old. In consequence of its finite age, we   
   can only see a finite amount of it.   
      
   So whether it's really infinite in extent is not something we actually   
   know, and can probably never know. We also don't know whether the   
   physical laws are really the same everywhere. There could be variations   
   that are too small to be detectable in the amount of the universe that   
   we can see.   
      
   In some ways, having physical laws that vary over the universe is   
   philosophically attractive, because it could be an answer to why the   
   laws we see seem so finely tuned to support our existence.   
      
   Sylvia.   
      
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