answers: 11
context: The Big Bang Theory 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. All three also serve as head writers. The show premiered on CBS on September 24, 2007. The twelfth and final season which will run through 2018–19 premiered on September 24, 2018, consisting of 24 episodes. 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 </s> The Big Bang Theory (season 11) The eleventh season of the American television sitcom "The Big Bang Theory" premiered on CBS on Monday, September 25, 2017. It returned to its regular Thursday time slot on November 2, 2017, after "Thursday Night Football on CBS" ended. The season concluded on May 10, 2018. In March 2017, CBS renewed the series for two additional seasons, bringing its total to twelve, and running through the 2018–19 television season. Like the previous three seasons, the first five episodes aired on Mondays due to CBS' contractual rights to air the "Thursday Night Football" games. After </s> Television. By the end of April, Bialik and Rauch had signed deals to earn $500,000 per episode, each, with the deals also including a separate development component for both actors. The deal was an increase from the $175,000 – $200,000 the duo had been making per episode. These actors are credited in all episodes of the series: These actors were first credited as guest stars and later promoted to main cast: As the theme of the show revolves around science, many distinguished and high-profile scientists have appeared as guest stars on the show. Famous astrophysicist and Nobel laureate George Smoot
question: how many sessions of big bang theory are there