![Big Bang Theory: What happened to Professor Proton? Why did he leave? | TV & Radio | Showbiz & TV | Express.co.uk Big Bang Theory: What happened to Professor Proton? Why did he leave? | TV & Radio | Showbiz & TV | Express.co.uk](https://cdn.images.express.co.uk/img/dynamic/20/590x/1206510_1.jpg)
Big Bang Theory: What happened to Professor Proton? Why did he leave? | TV & Radio | Showbiz & TV | Express.co.uk
The Big Bang Theory - 🎶Grab your goggles, put your lab coat on. Here he comes, Professor Proton!🎶 Don't miss an all-new episode of The Big Bang Theory tomorrow night at 8/7c!
![Professor Proton Big Bang Theory GIF - Professor Proton Big Bang Theory Sheldon - Discover & Share GIFs Professor Proton Big Bang Theory GIF - Professor Proton Big Bang Theory Sheldon - Discover & Share GIFs](https://media.tenor.com/rd5_Q8UsFQoAAAAC/professor-proton-big-bang-theory.gif)