When does The Big Bang Theory return?

The Big Bang Theory is an American television sitcom. It aired on CBS from September 24, 2007, to May 16, 2019, running for 12 seasons and 279 episodes. The show originally centered on five characters living in Pasadena, California. It was nominated for the Emmy Award for Outstanding Comedy Series from 2011 to 2014. A prequel series, Young Sheldon, premiered in 2017, with Parsons reprising his role as the narrating adult Sheldon.