Members of the NASA Cassini Mission Team speak at an end of mission preview news briefing on September 13, 2017, at NASA's Jet Propulsion Laboratory in Pasadena, California. Team members (L-R) are NASA Director of Planetary Science Jim Green, Cassini Project Manager Earl Maize, Cassini Project Scientist Linda Spilker and Hunter Waite, team lead for Cassini Ion and Neutral Mass Spectrometer. / AFP PHOTO / Robyn BeckROBYN BECK/AFP/Getty Images

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