Thread: expansion of the universe is cause from a strong gravitational pull.
View Single Post
  #58 (permalink)  
Old 08-January-2009, 06:41 AM
gzhpcu's Avatar
gzhpcu gzhpcu is offline
Order of Kilopi
  
Join Date: Jun 2004
Location: Lugano, Switzerland
Posts: 3,684
Default
Quote:
Originally Posted by tommac View Post
Why is a shell needed? Lets say that there is just a HUGE gravitational source outside of our visible universe. ( Maybe another brain in a pre-big-bang state ).

We are all being pulled to that brain. the things that are closer to that area of the universe are being pulled faster ... the things that are farther from that point are being pulled slower ... both are being pulled away from us because of this gravitational force.
Just a nit-pick: not "brain", but rather "brane". You are (knowingly, unknowingly?) referring to a M-theory based cosmology (for example like the Ekpyrotic model). Not aware of any inter-brane gravitational force being stipulated, however.