Charles James "Chuck" Hailey is an experimental astrophysicist and Pupin Professor of Physics at Columbia University. He earned his BA in Physics from Cornell University in 1977 and his PhD from Columbia in 1983, with a thesis entitled "The Development of an Imaging Gas Scintillation Proportional Counter for Use in X-ray Astronomy." He received tenure from Columbia University in 1995. Hailey's research focuses on high energy astrophysics and experimental particle physics. He is Co-Director of the Columbia Astrophysics Laboratory, where he works on gamma-ray and X-ray research.