Stephen Hawking was one of the most recognisable scientist of modern times. Let's take a look at his life and legacy.
Stephen Hawking was born in 1942 in Oxford, England.
He attended University College, Oxford, where he studied physics and then did his graduate studies in cosmology in Cambridge.
Hawking was diagnosed with ALS, a motor neurone disease, when he was just 21.
He said "I try to lead as normal a life as possible, and not think about my condition, or regret the things it prevents me from doing, which are not that many."
Despite the disease, Hawking still acquired numerous academic and professional accolades.
He wrote the best-seller "A Brief History of Time", in which he used non-technical terms to describe the structure, origin, development and eventual fate of the universe for non-specialist readers.
And his research of black holes and universe won him the respect from the scientific world.
Although he was using a wheelchair and had to communicate via a computerized voice system, Hawking always maintained a heart full of curiosity and even tried to breach his physical limitations.
He actually experienced flight under zero gravity conditions!
Wandering in space had always been his dream.
He said "I have always tried to overcome the limitations of my condition and lead as full a life as possible. I have traveled the world, from the Antarctic to zero gravity. Perhaps one day I will go into space."
His children described him as a great scientist and an extraordinary man whose work and legacy will live on for many years.
And no doubt, his courage and persistence will continue to inspire many across the world.