Consider the universe at redshift z=2. What is the average matter density in the universe then compared to now? What is the average radiation energy density then compared to now? What is the temperature of the cosmic background radiation then? Suppose the energy density in matter. pc^2, i snow 2000 times greater than the energy density in radiation. At what redshift did matter and radiation have equal energy?
I am utterly perplexed and lost
type: is now* not I snow. sorry
I am utterly perplexed and lost
type: is now* not I snow. sorry