Claudia J. Alexander, Ph.D., is a research scientist specializing in geophysics and planetary science. She is African American. She has worked for the United States Geological Survey and the National Aeronautics and Space Administration. As member of the technical staff at the Jet Propulsion Laboratory, she was the last project manager of NASA's Galileo mission to Jupiter and is currently project manager and scientist of NASA's role in the European led Rosetta mission to study comet 67P/Churyumov-Gerasimenko.