History of the Big Bang theory scales, has no preferred directions or preferred places. Hubble's idea allowed for two opposing hypotheses to be suggested. One was Lemaître's Big Bang, advocated and developed by George Gamow. The other model was Fred Hoyle's Steady State theory, in which new matter would be created as the galaxies moved away from each other. In this model, the universe is roughly the same at any point in time. It was actually Hoyle who coined the name of Lemaître's theory, referring to it as "this 'big bang' idea" during a radio broadcast on 28 March 1949, on the BBC Third Programme. It
The Big Bang Theory Lorre and Molaro, with Prady expected to be involved in some capacity, and intended to air in the 2017–18 season alongside "The Big Bang Theory". The initial idea for the series came from Parsons, who passed it along to "The Big Bang Theory" producers. In early March 2017, Iain Armitage was cast as the younger Sheldon, as well as Zoe Perry as his mother, Mary Cooper. Perry is the real-life daughter of Laurie Metcalf, who portrays Mary Cooper on "The Big Bang Theory". On March 13, 2017, CBS ordered the spin-off "Young Sheldon" series. Jon Favreau directed and executive produced