Science's Biggest Celeb Signs Off

Stephen Hawking, whose brilliant mind ranged across time and space though his body was paralyzed by disease, has died. 

The best-known theoretical physicist of his time, the 76-year old wrote so lucidly of the mysteries of space, time and black holes that his book, "A Brief History of Time," became an international bestseller, making him one of science's biggest celebrities since Albert Einstein.

Click HERE to read more on the life of the brilliant Stephen Hawking.

Stephen Hawking was involved in many big pop culture moments, including The Big Bang Theory.  There were many more. Do you remember THESE?