Size of Universe

However the size of the Universe is unknown; it may be infinite.

46 billion light years, based on where the expansion of space has taken the most distant objects observed

No, it just means we only have the ability to see things that are that many light years away from us

it is assumed here that c the speed of light is constant of course. But it isn't

Don't know why this should bother me but it does

To be sure, all cosmologists accept that there are some regions of the universe that lie beyond the reach of our telescopes, but somewhere on the slippery slope between that and the idea that there are an infinite number of universes, credibility reaches a limit. As one slips down that slope, more and more must be accepted on faith, and less and less is open to scientific verification. Extreme multiverse explanations are therefore reminiscent of theological discussions. Indeed, invoking an infinity of unseen universes to explain the unusual features of the one we do see is just as ad hoc as invoking an unseen Creator. The multiverse theory may be dressed up in scientific language, but in essence it requires the same leap of faith.

Paul Davies says..

..his circular-logic

Quote:

..his circular-logic

Que might be onto something but unable to express himself

Hi Que. Why not start a new thread with this assertion, of course explaining your unique position

If the speed of light is not constant then the measurements are very very very wrong. Why may I not write that?

Of course you may though many of us might appreciate further detail