The historic building atop Mt. Hamilton is red-tagged and closed to visitors. But Astronomer Elinor Gates gave us a first-hand look at the repairs underway.

The summit of Mount Wilson looms over Pasadena at about 5,715 feet, with the white domes of the observatory buildings and surrounding radio towers visible to drivers along Interstate 210 below. The ...

SAN DIEGO COUNTY, CA - A 2.0 magnitude quake was reported close to Palomar Observatory Saturday morning, according to the U.S. Geological Survey. It was reported that a tremor struck the region at ...

Just an hour east of San José, up a steep road with bursting wildflowers and crooked oak trees winding through the Diablo Range, sits one of California’s most remarkable scientific outposts. Perched 4 ...