What were Carl Sagan's contributions to science? Remembering the 'Cosmos' star on his 90th birthday.
On what would've been the astronomer's 90th trip around the sun, here's a look at his legacy as a scientist, advocate and communicator.
Jean-Luc Margot
Professor of Earth, Planetary, and Space Sciences, University of California, Los Angeles
Jean-Luc Margot is a UCLA professor with joint appointments in the Department of Earth, Planetary, and Space Sciences and the Department of Physics and Astronomy. He is a planetary astronomer who conducts research on the properties of planetary bodies with a variety of spacecraft and telescopes. His research interests include the dynamics and geophysics of planetary bodies, radio and radar astronomy, and SETI. Dr. Margot received a B.S. in electrical engineering in 1993 in Belgium and a Ph.D. in astronomy in 1999 from Cornell University.
