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A longtime NASA planetary scientist, she helped lead some of the most celebrated missions to the outer solar system, including Voyager and Cassini. Her work has focused especially on Saturn and its rings, bringing deep science to a wide audience of space fans.

by Louise Spilker
Dr. Linda J. Spilker is an American planetary scientist and senior research scientist at NASA’s Jet Propulsion Laboratory. According to JPL, she has worked on NASA and international planetary missions for more than 45 years and currently serves as the Voyager Project Scientist.
She is especially known for her leadership on the Cassini mission to Saturn, where she served as project scientist, and for her research on the evolution and dynamics of Saturn’s rings. Her career has combined scientific analysis with mission planning, operations, and leadership across major deep-space projects.
Born in 1955, Spilker has become one of the most recognizable scientists associated with the exploration of the outer planets. Her work has helped shape how scientists and the public understand Saturn, its rings, and the long-running legacy of robotic exploration beyond Earth.