Dr. Rosaly Lopes is a Senior Research Scientist and Manager of Planetary Science at NASA's Jet Propulsion Laboratory. She is an expert in planetary geology, particularly on volcanoes on Earth and other planets and moons. She worked on the Galileo mission investigating the volcanoes on Jupiter's moon Io and currently works on the Cassini mission studying the geology of Saturn's moon Titan. She grew up in Brazil and got her Bachelor's in Astronomy and Ph.D. in Planetary Geology from University College London in England. She has won many awards, including the Carl Sagan Medal from the American Astronomical Society's Division for Planetary Sciences and the NASA Exceptional Service Medal. She has published extensively, including over 120 research papers and seven books, and is a Fellow of the AAAS and the GSA.