Melissa McGrathMelissa McGrath is a senior scientist at the Carl Sagan Science Center, SETI Institute. She has had a distinguished career with over thirty years of experience as a planetary scientist studying Jupiter's four large Galilean satellites: Io, Europa, Gaymede and Callisto. She has worked on numerous NASA missions, including the Hubble Space Telescope, and the upcoming JUICE and Europa Clipper missions, and she has held leadership positions at NASA, the International Astronomical Union, and the American Astronomical Society. She has also served as a scientific editor for The Astrophysical Journal. Read More Read Less