In the world of sitcom history, The Big Bang Theory is a massive 12-season constellation that spanned 279 episodes between 2007 and 2019. Wikipedia +1 If you're looking for a "story" of how the series expanded, it’s best told through the different chapters of its growing universe: The Main Series: 12 Seasons The original show followed two roommates, Leonard and Sheldon, as they navigated life in Pasadena with their friends and neighbor Penny. It became one of the most successful sitcoms ever, eventually ending in 2019 when Jim Parsons (Sheldon) decided to move on. IMDb +2 The Prequel: 7 Seasons While the main show was still airing, a prequel titled Young Sheldon began in 2017. It chronicled the childhood of Sheldon Cooper in Texas and ran for 7 seasons, concluding in 2024. Reddit +3 The Newest Spin-offs The story didn’t stop with Sheldon's childhood. The franchise has continued to branch out: Georgie & Mandy’s First Marriage : A direct sequel to Young Sheldon , which premiered in October 2024 and follows Sheldon’s older brother. Stuart Fails to Save the Universe : An upcoming series currently in development for HBO Max. This show puts the spotlight on Stuart Bloom, the comic book shop owner, and reportedly involves a wild sci-fi twist where he accidentally opens a multiverse. Wikipedia +5 11 sites The Big Bang Theory - Wikipedia For the Discovery Channel series, see The Big Brain Theory. * The Big Bang Theory is an American television sitcom created by Chuc... Wikipedia First Footage Reveals A Darker, Stranger Big Bang Theory Spinoff Dec 12, 2025 —

The series aired on the CBS television network for exactly 12 years, making it one of the longest-running multi-camera sitcoms in American television history.

: A new project for HBO Max, reportedly featuring Stuart Bloom, Denise, and Bert Kibbler, is currently in development. Are you planning to the entire series, or

| Series | Years | Episodes | |--------|-------|----------| | 1 | 2007–2008 | 17 | | 2 | 2008–2009 | 23 | | 3 | 2009–2010 | 23 | | 4 | 2010–2011 | 24 | | 5 | 2011–2012 | 24 | | 6 | 2012–2013 | 24 | | 7 | 2013–2014 | 24 | | 8 | 2014–2015 | 24 | | 9 | 2015–2016 | 24 | | 10 | 2016–2017 | 24 | | 11 | 2017–2018 | 24 | | 12 | 2018–2019 | 24 |