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	Dr. Stephen Hawking
	Dr. Stephen Hawking was born exactly 300 years after the death of Galileo.

Stephen Hawking was born on January 8, 1942 in Oxford, England. He attended University College at Oxford. He wanted to study mathematics but it wasn't available, so he studied physics. While in college, Stephen Hawking was diagnosed with a disease that slowly weakens all of the muscles in his body. Despite being ill, he went on to get a Ph.D. in physics. Dr. Hawking died on March 14, 2018.

Dr. Hawking researched black holes. One of his most important discoveries was that black holes emit X-rays and gamma-rays that can be detected by special scientific instruments. Dr. Hawking is the author of A Brief History of Time and Black Holes and Baby Universes and Other Essays.

A Question What discovery did Dr. Stephen Hawking make that improved our knowledge of the universe?