Mario Livio is an Israeli astrophysicist and an author of works that popularize science and mathematics. From 1991 till 2015 he was an astrophysicist at the Space Telescope Science Institute, which operates the Hubble Space Telescope. Wikipedia*
On the C-SPAN Networks:
Mario Livio has three videos in the C-SPAN Video Library; the first appearance was a 2007 News Conference. The year with the highest average number of views per program was 2013 with an average of 947 views per program. Most common tag: Space.