Stephen Hawking
via NASA

World renowned theoretical physicist Stephen Hawking died this week at the age of 76.

The famed physicist was diagnosed with amyotrophic lateral sclerosis (ALS, or as Lou Gehrig’s disease) at the age of 21, which ultimately confined him to a wheelchair for most of his life.

Hawking is considered by many to be the world’s greatest living scientist. He is famous for his insights on black holes, the existence of God and quantum gravity, as well as his unique way of communicating via a computer screen and wheelchair.

Hawking wasn’t given long to live, but he beat the odds, living out a long life… and accomplishing so much.

He released a a best-selling book in 1988, titled A Brief History of Time, which offers a simple explanation of the complex fundamentals of physics.

There was also a biopic about Hawking’s life called The Theory of Everything, which hit the big screen in 2014.