Stephen Hawking, world renowned British physicist, and possibly the smartest man on earth, died at the age of 76 early hours of Wednesday morning.

"Stephen Hawking's integrity and scientific dedication placed him above pure brilliance," said Apple's co-founder Steve Wozniak.

Hawking was famed for his work with black holes and relativity, and he was never to big to say his previous theories were wrong. Here are more of his achievements.

When Hawking was just 22, he was given just a few years to live after being diagnosed with a rare form of motor neurone disease. Although the disease left him in wheelchair and took his ability to speak without a voice synthesiser, instead of a few years he managed to add more than 50 years to his life. Some say, including himself probably, that his longer life was the result of his humorous attitude towards life independent of everything.

Tim Berners-Lee, known for inventing the World Wide Web, said that "We have lost a colossal mind and a wonderful spirit. Rest in peace, Stephen Hawking."