Dr Mario Livio is a senior astrophysicist at the Space Telescope Science Institute. He joined the Institute in 1991 as head of the Archive Branch, and also served as the Head of the Institute’s Science Division. Prior to coming to the Institute, he completed his undergraduate studies (majoring in physics and mathematics) at the Hebrew University in Jerusalem, his M.Sc. degree (in theoretical particle physics) at the Weizmann Institute, and his Ph.D. (in theoretical astrophysics) at Tel-Aviv University. He was a professor of physics in the physics department of the Technion-Israel Institute of Technology from 1981 until 1991.