David H. Levy is a Canadian astronomer and author, best known for his work in the field of comet discovery. He has co-discovered several comets, including the famous Comet Shoemaker-Levy 9, which collided with Jupiter in 1994. His contributions to astronomy have made him a prominent figure in the scientific community. In addition to his discoveries, Levy has written numerous books and articles about astronomy, making the subject accessible to the general public. He is also a passionate advocate for education in science, often speaking at schools and public events to inspire interest in astronomy and space exploration.