Claudia Alexander, a NASA scientist who oversaw the dramatic conclusion of the space agency's long-lived Galileo mission to Jupiter and managed the United States' role in the international comet-chasing Rosetta project, died July 11 at Methodist Hospital of Southern California in Arcadia. She was 56.
The cause was breast cancer, said her sister, Suzanne Alexander.
During nearly three decades at NASA's Jet Propulsion Laboratory in La Cañada Flintridge, Alexander was known for her research on subjects including solar wind, Jupiter and its moons, and the evolution and inner workings of comets.
She was the last project manager of Galileo, one of the most successful missions for exploring the distant reaches of the solar system.