What is the current scientific explanation of the big bang theory?
The big bang depends on the assumption that the cosmological red shift is a Doppler shift of light losing frequency by virtue of its source moving away from us. I think that the red shift is actually from gravitational intersection of the photons with masses passed in space. To see this developed access http://www.geocities.com/isoptera.geo/redaw.html . If this is so, there was no big bang, just an infinite Universe.
