Big Bang of the world happened a little before the beginning of space and time. During the 1930s other ideas were proposed as non-standard cosmologies to explain Hubble's observations, including the Milne model, the oscillatory universe (originally suggested by Friedmann, but advocated by Albert Einstein and Richard Tolman) and Fritz Zwicky's tired light hypothesis. After World War II, two distinct possibilities emerged. One was Fred Hoyle's steady state model, whereby new matter would be created as the universe seemed to expand. In this model the universe is roughly the same at any point in time. The other was Lemaître's Big Bang theory,
The Big Bang Theory (season 4) only on the women, and in the process has made Penny a much more well-rounded character rather than just a foil for the nerds". Todd VanDerWerff of "The A.V. Club" wrote that "Jim Parsons and Kaley Cuoco's interplay remains the show's secret weapon", and Eric Hochberger of TV Fanatic wrote: "Really though, everything about the main story worked amazing. Mayim fits in perfectly in "The Big Bang Theory" cast and played off of Kaley Cuoco just as well as Emmy Award-winning Parsons". The Big Bang Theory (season 4) The fourth season of the American sitcom "The Big Bang Theory", began