Dr. Robert C. Reedy Senior Scientist Planetary Science Institute reedy @psi.edu

My research uses the products of cosmic-ray interactions to study matter and radiation in the solar system. Cosmic-ray-produced nuclides are used to study the recent histories of interplanetary energetic particles and of lunar samples, meteorites, and terrestrial-surface samples. Gamma rays are used to determine the elemental composition of the top meter of Mars and the Moon.