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Associations
- 2111 Foundation for Exploration
- American Astronomical Society
- American Institute of Aeronautics and Astronautics
- American Lunar Society
- American Meteor Society
- The Apollo Society
- Artemis Project
- Association of Space Explorers
- Association of Universities for Research in Astronomy
- Astronauts Memorial Foundation
- Astronomical League
- Astronomical Society of Australia
- Astronomical Society of the Pacific
- Austin Area Rocketry Group
- Austin Astronomical Society
- Australasian Planetarium Society
- British Astronomical Association
- British Interplanetary Society
- Calumet Astronomical Society
- Chicago Astronomical Society
- Federation of American Scientists Space Policy Project
- Fort Worth Astronomical Society
- Houston Astronomical Society
- International Dark-Sky Association
- International Planetarium Society
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