Classified for credit

Member-run dark-sky observatory with public programs in the San Bernardino Mountains — covers optics, stellar astronomy, and observational technique.

Small natural history museum in Arcata covering regional geology, paleontology, and Pacific Northwest biodiversity.

Active solar research observatory on Big Bear Lake — covers solar physics, telescopy, and real-time space-weather data collection.

Regional aquarium and wildlife center covering aquatic biology, local ecosystems, and wildlife conservation in Northern California.

Regional aviation museum documenting North Bay-area aircraft and military aviation history — supports aerospace and engineering curriculum.

Marine science center on the Mendocino coast with exhibits on local ocean ecosystems — covers marine biology, coastal ecology, and conservation science.

Small coastal aquarium in Crescent City featuring local Pacific marine life — covers marine biology, tidal ecosystems, and coastal ecology.

California Historical Landmark powerhouse (Station A) that first transmitted long-distance AC electricity in 1895 — covers electrical engineering history and power generation.

Community college planetarium with public shows on astronomy, space science, and the night sky — covers celestial mechanics, scale of the universe, and observational astronomy.

Natural history museum with Monarch butterfly, bird, and marine specimen collections — covers Central California Coast ecology and taxonomy.

Community college public planetarium offering astronomy programs covering celestial mechanics, the solar system, and observational science.

Public planetarium in Torrance — astronomy, celestial mechanics, and sky-science programming for school-age learners.

Planetarium facility in Fresno — covers astronomy, Earth's position in the solar system, and light/optics concepts.

Visitor center at an active open-pit borax mine — covers industrial mineralogy, desert geology, and large-scale mining operations.

Public observatory operated by volunteers with large telescopes — covers stellar physics, optics, and observational astronomy through guided nighttime viewing.

Telephone history museum tracing communication technology from early telephony to digital networks — covers electrical engineering and technology history.

City-run utility education center with hands-on exhibits covering water treatment, electricity, recycling, and public infrastructure systems.

Chico State planetarium — astronomy programs and immersive sky shows for school groups.

Small aquarium on the Manhattan Beach pier featuring live local marine specimens — covers Southern California coastal ecology, marine biology, and tidal zone species.

University-operated planetarium at Sacramento State — covers astronomy, orbital mechanics, and cosmology through live sky shows and dome presentations.

Public planetarium at Antelope Valley College with dome shows on astronomy and space science — covers celestial mechanics, cosmology, and Earth's place in the solar system.

Historic 48-inch Schmidt telescope at Palomar Observatory — covers optics, astrophysics, and the history of photographic sky surveys.

Community natural history museum on Monterey Bay covering local marine and terrestrial ecosystems — supports marine biology, paleontology, and California natural history.

Public planetarium with sky shows and astronomy programs — covers celestial mechanics, stellar classification, and observational astronomy.