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Cassini project scientist at JPL, Linda Spilker, left, Cassini interdisciplinary Titan scientist at Cornell University, Jonathan Lunine, second from left, Cassini Composite Infrared Spectrometer(CIRS) Instrument deputy principle investigator Connor Nixon, second from right, and Cassini assistant project science systems engineer Morgan Cable, right, participate in a Cassini science panel discussion during the Cassini NASA Social, Thursday, Sept. 14, 2017 at NASA's Jet Propulsion Laboratory in Pasadena, California. Since its arrival in 2004, the Cassini-Huygens mission has been a discovery machi…