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Carolyn C. Porco (born March 6, 1953) is an American planetary scientist known for her work in the exploration of the outer solar system, beginning with her imaging work on the Voyager missions to Jupiter, Saturn, Uranus, and Neptune in the 1980s. She leads the imaging science team on the Cassini mission currently in orbit around Saturn. She is also an imaging scientist on the New Horizons mission launched to Pluto on January 19, 2006. She is an expert on planetary rings and the Saturnian moon, Enceladus.

She has co-authored more than 110 scientific papers on subjects ranging from the spectroscopy of Uranus and Neptune, the interstellar medium, the photometry of planetary rings, satellite/ring interactions, computer simulations of planetary rings, the thermal balance of Triton’s polar caps, heat flow in the interior of Jupiter, and a suite of results on the atmosphere, satellites, and rings of Saturn from the Cassini imaging experiment. In 2013, Cassini data confirmed a 1993 prediction by Porco and Mark Marley that acoustic oscillations within the body of Saturn are responsible for creating particular features in the rings of Saturn.