The California High School Cosmic Ray Observatory, (abbreviated CHICOS, for California HIgh school Cosmic ray ObServatory), operated by the Kellogg Laboratory at the California Institute of Technology in Pasadena, California, United States, is one of the world's largest ongoing Cosmic Ray observatory programs.
The California High School Cosmic Ray Observatory, located at the Kellogg Laboratory of the California Institute of Technology in Pasadena, California, is a major international program for studying cosmic rays.