Short answers, pulled from the story.
The main characters introduced in the pilot episode are Penny, Leonard Hofstadter, and Sheldon Cooper. Penny moves into an apartment across from Leonard and Sheldon while they live together in Pasadena.
The Big Bang Theory premiered on the 24th of September 2007. It was picked up for a full twenty-two-episode season on the 19th of October 2007 after production halted due to the Writers Guild of America strike.
David Saltzberg served as the science consultant for six seasons and checked scripts for physics and astronomy accuracy. He provided dialogue, mathematics equations, and diagrams used as props during taping.
Jim Parsons won a Golden Globe for Best Performance by an Actor in a Television Series Comedy or Musical on the 16th of January 2011. He also received Emmy Awards for Best Actor in a Comedy Series on the 18th of September 2011 and the 25th of August 2014.
The prequel series Young Sheldon came to an end on the 16th of May 2024 with an hour-long episode including George Cooper's funeral. Jon Favreau directed and executive produced the pilot which premiered on the 25th of September 2017.