The Big Bang Theory Photos from "The Proton Transmogrification" Carla Day at April 28, 2014 6:08 pm. Check out the official photos from The Big Bang Theory Season 7 Episode 22. The episode is titled, "The Proton Transmogrification," and airs on Thursday, May 1 at 8 p.m. ET on CBS. 1. Penny Learns About Star Wars Day The gang introduces Penny to Star Wars Day on May 4th. 2. Leonard Consoles Sheldon Leonard consoles Sheldon after letting him know a hero of his died. 3. Professor Proton's Show Sheldon watches an episode of Professor Proton's show. 4. Penny Comforts Sheldon Penny talks to Sheldon before going to the funeral. 5. Star Wars Day Celebration Sheldon, Howard and Raj start celebrating Star Wars Day on May 4th. 6. Death Star Cake Amy and Bernadette make a Death Star Cake to celebrate Star Wars Day. 7. Leonard and Penny Attend a Funeral Leonard and Penny attend a funeral and pay respects on May 4th. 8. Sheldon Hugs Leonard After having an emotional dream, Sheldon hugs Leonard to show he cares. 9. Star Wars Day Death Star Cake Bernadette and Amy bring the Death Star Cake to the Star Wars Day celebration. 10. Obi-Wan Professor Proton Professor Proton is as Obi-Wan with a light saber visits Sheldon. Wait! There's more! Just click "Next" below: Next Edit Delete