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Judith Gamora Cohen is the Kate Van Nuys Page Professor of Astronomy at the California Institute of Technology. She holds a BA from Radcliffe College, a PhD from Caltech, and a BS from the University of Arizona. Her research in the structure and evolution of stars and galaxies has included developing instrumentation for the Keck observatory and leading the Caltech Faint Galaxy Redshift Survey,[3] with more than 200 published papers.[4]
She has given the Caroline Herschel Distinguished Lecture at Space Telescope Science Institute and the Cecilia Payne-Gaposchkin Distinguished Lecture at the Center for Astrophysics, Harvard University.
Some of her research has been described in the popular press. Cohens research on dark matter suggests is called "dark" for a good reason. Although they outnumber particles of regular matter by more than a factor of 10, particles of dark matter are elusive. She says their existence is inferred by their gravitational influence in galaxies, but no one has ever directly observed signals from dark matter. Now, by measuring the mass of a nearby dwarf galaxy called Triangulum II, Assistant Professor of Astronomy Evan Kirby may have found the highest concentration of dark matter in any known galaxy.