On Mon, Dec 24, 2018 at 3:21 PM <[email protected]> wrote: >> You can never prove that any physical quantity is exactly zero, but we >> do know from observations of the cosmic microwave background radiation that >> if the universe is curved at all it is by less than one part in 100,000. >> >
*> Agreed. However, IMO the observed universe cannot be flat with exactly > zero curvature (which I refer to as "mathematically flat) since that would > imply infinite volume * > If information can't travel faster than light then by definition the radius of the spherical volume of the universe you can observe can't be larger than the age of the universe in years times a light year. > *> **which contradicts its finite age.* > There is no reason spacetime couldn't extend a finite distance into the past but an infinite distance into the future. John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
