The Astronomy Program is offered as a joint program with the physics departments at Harvey Mudd and Pomona Colleges. Courses are offered within the physics program and are intended for students who have an interest in the subject or those who may wish to pursue astrophysics at the graduate level.

The W. M. Keck Science Department of Claremont McKenna College, Pitzer College, and Scripps College, in cooperation with Harvey Mudd and Pomona Colleges, maintains facilities at the Table Mountain Observatory, located about an hour from campus in the San Gabriel Mountains. Equipment includes a 40-inch telescope with a photometer, CCD camera, IR camera, and CCD spectrograph. No major in astronomy is available at The Claremont Colleges; normally interested students major in physics.