Stephen Hawking was pretty amazing. He really had a genius mind!
Yes, he was a great theoretical physicist.
Yes, and I heard he was also talented in other areas too?\
He also is a vigorous supporter of the many-worlds interpretation of quantum mechanics.
I thought I read he had a theory in string theory, but I can't remember if that was correct or not.
String theory
In physics, string theory is a theoretical framework in which the point-like particles of particle physics are replaced by one-dimensional objects called strings. It describes how these strings propagate through space and interact with each other. On distance scales larger than the string scale, a string looks just like an ordinary particle, with its mass, charge, and other properties determined by the vibrational state of the string. In string theory, one of the many vibrational states of the string corresponds to the graviton,
Hawking was the first to set out a theory of cosmology explained by a union of the general theory of relativity and quantum mechanics. He was a vigorous supporter of the many-worlds interpretation of quantum mechanics.
Hawking achieved commercial success with several works of popular science in which he discusses his own theories and cosmology in general. His book "A Brief History of Time" appeared on the British "Sunday Times" best-seller list for a record-breaking 237 weeks. Hawking was a Fellow of the Royal Society