Marc Kamionkowski is a theoretical physicist recognized for his work in astrophysics and cosmology. He is known primarily for work on dark matter and dark energy and on connections between the cosmic microwave background and the early Universe. Kamionkowski grew up in Shaker Heights, Ohio. He obtained a BA in physics from Washington University in St Louis in 1987 and a PhD in physics from the University of Chicago in 1991. He was a postdoctoral fellow at the Institute for Advanced Study in Princeton, NJ and a faculty member at Columbia University and the California Institute of Technology before joining the faculty at Johns Hopkins University in 2011.

Research Interests

Over the years Kamionkowski has explored an array of subjects in astrophysics, cosmology, and particle theory. Much of his work has involved the mysterious dark matter known to populate galactic halos and the accelerated cosmic expansion. He has also over the years maintained an interest in exploring how measurements of the cosmic microwave background and of the current cosmic mass distribution can be used to learn about the origin and evolution of the Universe and about new fundamental physics. He has also, however, worked on other aspects of physics and astrophysics, such as galaxy clusters, gravitational-wave astrophysics, the physics of the interstellar medium, neutrino astrophysics, and galaxy formation/evolution.

Membership Type


Election Year


Primary Section

Section 13: Physics

Secondary Section

Section 12: Astronomy