• Astronomy (includes Observatories)

• 64.

Amateur Observers Society of New York Inc

The Amateur Observers’ Society of New York, was established in 1965.

Des Moines Astronomical Society

The Cosmos is our home, and the night sky is where we can see it best.

• Physical Sciences/Earth Sciences Research and Promotion

• 66.

Champaign-Urbana Astronomical Society

Champaign-Urbana Astronomical Society, Inc.

• Astronomy (includes Observatories)

• 67.

Southwest Florida Astronomical Society Inc

Last Call for 2025 Membership Dues Its time to pay your 2025 membership dues.

Minnesota Astronomical Society

The Minnesota Astronomical Society is a tax-exempt 501 (c) (3) organization based in the Twin Cities of Minneapolis and St.

Los Angeles Astronomical Society Inc

In 1926, local amateur telescope makers organized the L.

• Astronomy (includes Observatories)

• 70.

Skys the Limit Observatory & Nature Center

We have free public star parties most Saturdays.

• Natural Resource Conservation and Protection

• 71.

Methow Dark Sky Coalition

Our mission: To preserve, Enhance and Promote Dark Skies in the Methow Valley ​ METHOW DARK SKY Coalition Home About Light Pollution Events News Gallery Contact More Preserve Methow Dark Skies The Methow Valley has some of the darkest skies in Washington state and the entire country.

• Adult, Continuing Ed

• 72.

Battle Point Astronomical Association

The BPAA is a non-profit amateur astronomy organization on Bainbridge Island, Washington.