XPost: sci.physics, sci.physics.relativity   
   From: N:dlzc1.D:cox.T:net@nospam.com   
      
   Dear George Kinley:   
      
   "George Kinley"  wrote in message   
   news:nmNFd.34881$g4.647017@news2.nokia.com...   
   > Hi,   
   > If our galaxy is rotating around other group of galaxy under influenece   
   > of combined gravity of galaxies, which mean that combined gravity of   
   > all the galaxy should be more then gravity of individual black hole   
   > present in the centre of every galaxy, so how does light travel under   
   > such emmence gravity   
      
   The effect of gravity drops off roughly as 1/r^2.  So light has no issues   
   with this.  The velocities you imagine for these galaxies are low, and   
   gravity has aeons to do its job.   
      
   Some observer elsewhere in the Universe might see "gravitational lensing"   
   of light that passes by us.  But most likely not.   
      
   The average density of the "Virgo supercluster", of which the Milky Way is   
   a part, is less than that of the 'atmosphere' where the ISS orbits.  We are   
   smoke, observing smoke...   
      
   David A. Smith   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)