The Golden Gate Raptor Observatory, headquartered in San Francisco’s Fort Mason, suddenly ceased operations earlier this ...

Snow made a rare appearance in the Bay Area early Wednesday morning, with Mount Hamilton getting a fresh coat of snow. Video ...

and one just north of San Francisco in Ukiah, the seat of Mendocino County. The International Latitude Service ran for nearly a century, gathering data through long nights of stargazing and ...

If you are interested in visiting HCRO, we are located approximately 300 miles NE of San Francisco, in Shasta County, California. A self-guided tour is available during opening hours. WARNING: HCRO is ...

situated in the Cascade Mountains about 300 miles north of San Francisco. Radio SETI experiments have traditionally relied on existing radio astronomy telescopes. While this allows such searches to be ...