Over time, supporting characters have been promoted to starring roles including: physicist Leslie Winkle, neuroscientist Amy Farrah Fowler, microbiologist Bernadette Rostenkowski, and Stuart Bloom, the cash-strapped owner of the comic book store the characters often visit. The show originally centered on five characters living in Pasadena, California: Leonard Hofstadter and Sheldon Cooper, both physicists at Caltech, who share an apartment Penny, a waitress and aspiring actress who lives across the hall and Leonard and Sheldon's similarly geeky and socially awkward friends and co-workers, aerospace engineer Howard Wolowitz and astrophysicist Raj Koothrappali. The twelfth and final season which will run through 2018–19 premiered on September 24, 2018, consisting of 24 episodes.
The show premiered on CBS on September 24, 2007.
The Big Bang Theory is an American television sitcom created by Chuck Lorre and Bill Prady, both of whom serve as executive producers on the series, along with Steven Molaro.
