The show was released on September 24, 2007, and ended on May 16, 2019. It was on the air for a total of 12 seasons. The decision to cancel the series was made after Jim Parsons (Sheldon Cooper) announced he didn’t want to work on the project anymore. To continue without him wouldn’t have made much sense. The comedy received 55 Emmy Award nominations. Sheldon didn’t age a bit!