Circa 1950-1960 There were three competing cosmologies. Big Bang Alternating Bangs & Crunches Steady State aka Continuous Creation. Steady State was given up when Quasars were discovered. They indicated that the universe was different in the distant past. It was my favorite, but I gave it up sooner than its main advocate: Fred Hoyle. The originator of a theory is often the last to give it up. Does anyone know/remember why BangCrunch was given up?