Comedy / Sci‑Fi Twist – In seasons 11 and 12 of The Big Bang Theory, the gang at the California Institute of Technology continues navigating relationships, careers and awkward scientific hijinks. By Season 11: Sheldon proposes to Amy, Howard and Bernadette face parenting challenges, Raj deals with his personal insecurities and Penny & Leonard’s marriage faces grown‑up questions. Wikipedia+1
In Season 12: The show bows out with major milestones — Sheldon & Amy win the Nobel Prize in Physics, the characters confront change and evolution, and the series wraps with a heartfelt finale. Wikipedia+1

DETAILS

• 🎬 Creator(s): Chuck Lorre & Bill Prady
• 🎭 Main Cast: Jim Parsons (Sheldon Cooper), Johnny Galecki (Leonard Hofstadter), Kaley Cuoco (Penny), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Raj Koothrappali), Mayim Bialik (Amy Farrah Fowler), Melissa Rauch (Bernadette Rostenkowski‑Wolowitz)
• 📺 Season 11: Aired from September 25 2017 to May 10 2018. Wikipedia
• 📺 Season 12: Aired from September 24 2018 to May 16 2019. Wikipedia+1
• 🏷️ Episodes: Both seasons contain 24 episodes each. Wikipedia
• 🧩 Genre: Sitcom combining geek culture, physics jokes, relationship drama and heartfelt moments.