Acclaimed British physicist Stephen Hawking
has died.
He was wildly considered the world's greatest
living scientist.
For more than 30 years he was a professor
at Cambridge University, specializing in the
study of black holes.
He theorized space and time began with the
"Big Bang" and space and time will end in
black holes.
Hawking's book "A Brief History of Time" explained
astrophysics in simple terms and sold more
than 10 million copies.
It is considered one of the best-selling science
books ever written.
Hawking lived with ALS (Lou Gehrig's disease)
since 1963.
He spent much of his time confined to a wheelchair
and relying on a speech synthesizer to speak
for him.
Hawking was 76 years old when he died.
