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 6) The Big Bang Theory (season 6) The sixth season of the American sitcom "The Big Bang Theory" aired on CBS from September 27, 2012, to May 16, 2013. The series crossed the 20 million viewer mark for the first time with this season's "The Bakersfield Expedition", which along with "NCIS", made CBS the first network to have two scripted series reach that large an audience in the same week since 2007. This success has been attributed to the sitcom's exposure in syndication, its late 2010 move to a new time-slot, and the influence of showrunner Steven Molaro (who took over