Stephen Hawking was a renowned theoretical physicist and cosmologist known for his contributions to the fields of general relativity, quantum gravity, and cosmology. He was born in Oxford, England in 1942 and studied at both the University of Oxford and University of Cambridge. Hawking authored numerous books and papers on topics including black holes, the Big Bang theory, and the possibility of time travel. He received many prestigious awards for his scientific work, including the Presidential Medal of Freedom.