I've found several conflicting estimates of how many times larger, in volume, the entire universe is than the observable universe. http://cseligman.com/text/galaxies/expansion.htm" [Broken] says "hundreds or thousands" http://www.physics.ucsd.edu/~tmurphy/phys10/universe.pdf" [Broken] claims "125, 000 times larger" Wikipedia puts it at 10^23 times both http://en.wikipedia.org/wiki/Alan_Guth" [Broken]. And http://www.newscientist.com/article/dn14098?DCMP=ILC-hmts&nsref=news1_head_dn14098" New Scientist article claims 10^100 All of these numbers are wildly different. I'm having trouble finding anything that I would consider a "good source," and am unsure how recently there have been revised estimates of cosmic inflation. I'm very much a layman on this subject and would appreciate being pointed in the right direction.