A magnitude 4.2 earthquake occurred at 6:16 p.m. Friday roughly 3 miles northwest of Palomar Observatory, causing shaking across San Diego County and beyond, according to the U.S. Geological Survey.

PALOMAR MOUNTAIN, Calif. – The California Institute of Technology’s Palomar Observatory invites the public to share the wonders of exploring the universe during its open house on Saturday, June 25, ...

For astrophysicist Mansi Kasliwal, her appointment to the historic Palomar Observatory as the new director was a full-circle moment. The California Institute of Technology announced her new position ...

SAN DIEGO (KABC) -- A 4.0 magnitude earthquake struck near Palomar Observatory in northern San Diego County on Sunday morning, the U.S. Geological Survey said. "We felt an earthquake here at NWS San ...

SAN DIEGO — An earthquake with a preliminary magnitude of 4.1 struck near Palomar Observatory in north San Diego County Sunday morning, according to United States Geological Survey. The quake was ...

A preliminary magnitude 3.5 earthquake with an epicenter near Palomar Mountain rattled parts of San Diego County Friday morning. The United States Geological Survey (USGS) recorded an earthquake with ...