For example, can we really know or prove that the speed of light is constant? or that the redshift is entirely due to recessional speed and not due to gravity or some other source of energy decay?
Yes and yes, quite well actually.
Something doesn't "become science" merely because a scientist adopts it as his faith.
You seem to be equating science with atheism.
You said earlier that people of faith believe god created the universe, and that atheist believe nothing did. Now you're saying scientist have adopted a 'faith' about the origin of the universe.
So are all scientist atheist, and all of science based off of atheism?
- Oni
Edited by onifre, : No reason given.