thats based on assumptions based on assumptions based on assumptions. you wanna know 2 of the most interesting things? red shift was never proven to be true. ever. experimentally.  so it might just be an assumption that light behaves the same way over vast distances as the doppler effect. its a guess. and its a guess that changes everything. cosmic microwave radiation radars and sensors calibrate instruments, not by pointing to the 'universe center" which you would expect to be the origin of cbr, but to the boundary between space and earth. its likely not big bang remnant but radiation caused by the earth itself from electric activity.  most of astrophysics is on horribly shaky foundations. bonus fuckery: gases cannot emit continuous blackbody bands. we assume a star in space is within a blackbody, with 0 evidence to think that assumption is correct. which might throw most of our calculations off if it isn't. and theres no real reason to think it is other than wishful thinking.
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