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In this Sept. 21, 2003, file photo, Claudia Alexander, right, project manager for Galileo, waits in the mission control room in Pasadena, Calif., along with engineer Nagin Cox, center, and others for the spacecraft to take its final plunge into Jupiter. Alexander, a pioneering scientist who helped direct NASA's Galileo mission to Jupiter and the international Rosetta space exploration project, has died Saturday, July 11, 2015, after a long battle with breast cancer. She was 56. (AP Photo/Ric Francis, File) Ric Francis/AP
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