Cosmology: our galaxy is an oddball (Introduction)

by David Turell , Sunday, October 22, 2017, 14:54 (2588 days ago) @ dhw

DAVID: You have morphed the discussion into the same arguments as multiverses. It is reasonable except our universe is not dealing with an infinity of galaxies. I think the odds require that. Obviously we are here because all the conditions are correct.

dhw: Why do you declare so authoritatively that we are not dealing with an infinity of galaxies? Even in your own theistic scenario, your God is eternal, and your God makes the galaxies, so why could he not have been creating galaxies for ever and ever?

DAVID: We know this universe had a beginning and expanded to beyond the CMB. It therefore is limited and its galaxies are not infinite. Previously, if He has made many universes, which I don't doubt, there is probably an infinity of galaxies. I stated above 'this' universe.

dhw: Firstly, we don’t “know” this universe had a beginning – that is a theory. Secondly, we don’t “know” that it is limited – that is a theory. Thirdly, thank you for acknowledging that there is probably an infinity of galaxies. That would apply even if there is no God and even if this universe had a beginning, because we don’t and can’t know what happened before the beginning.

We have no current evidence that this current universe represents an eternal universe. All the current theories either accept a beginning or a cyclical coming and going. The CMB cannot be ignored.