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Organization	Location	Revenue	Expenses	Assets	Program	Fundr. cost	Employees	Type
National Geographic Society To increase and diffuse GEOGRAPHIC knowledge in the broadest sense, using the power of science, exploration… 53-0193519 · FY2024	Washington, DC	$209.3M	$220.5M	$2.5B	77%	5%	753	501(c)(3)
The American Society of Mechanical Engineers The mission of the AMERICAN SOCIETY of MECHANICAL ENGINEERS ("asme") is to advance engineering for the… 13-1623899 · FY2023	New York, NY	$136.7M	$152.5M	$227.9M	60%	0%	396	501(c)(3)
American Association for the Advancement of Science The aaas seeks to "advance SCIENCE, engineering, and innovation throughout the world for the benefit of all… 53-0196568 · FY2024	Washington, DC	$129.5M	$132.2M	$166.3M	84%	2%	523	501(c)(3)
American Physical Society To advance and diffuse the knowledge of physics for the benefit of humanity, promote physics, and serve the… 13-1656610 · FY2024	College Park, MD	$106.3M	$90.9M	$313.0M	87%	1%	288	501(c)(3)
Society for Science and the Public To promote PUBLIC understanding of SCIENCE 53-0196483 · FY2024	Washington, DC	$91.1M	$40.9M	$165.3M	84%	8%	122	501(c)(3)
American Physiological Society To advance scientific discovery, understand life, and improve health. 53-0204660 · FY2024	Rockville, MD	$40.5M	$22.2M	$93.2M	74%	1%	80	501(c)(3)
United States Space Foundation The Foundation delivers excellence in education, collaboration, and information to advance the global Space… 31-1653556 · FY2023	Colorado Springs, CO	$28.3M	$23.5M	$41.3M	70%	3%	136	501(c)(3)
American Astronomical Society To promote scientific research in and public understanding of astronomy and astrophysics. 21-0735173 · FY2024	Washington, DC	$21.9M	$21.7M	$25.5M	80%	0%	42	501(c)(3)
Code for Science and Society INC CODE for SCIENCE and SOCIETY, INC. Is organized to advance the power of data to improve the social and… 81-3791683 · FY2023	Portland, OR	$20.8M	$15.1M	$11.4M	81%	7%	41	501(c)(3)
Old Dartmouth Historical Society The Societys mission is to ignite learning through explorations of art, history, science and culture rooted… 04-2104805 · FY2024	New Bedford, MA	$18.7M	$6.6M	$51.3M	77%	11%	62	501(c)(3)
American Meteorological Society See notes for mission statement and significant activities.to advance the atmospheric and related sciences… 04-2103657 · FY2024	Boston, MA	$18.4M	$18.1M	$28.5M	82%	1%	97	501(c)(3)
Planetary Science Institute The Planetary Science Institute exists to: enable our researchers to study the origin, characteristics, and… 33-0175263 · FY2023	Tucson, AZ	$17.9M	$17.8M	$5.7M	90%	0%	172	501(c)(3)
The Explorers Club To champion the pursuit of exploration and scientific understanding for the betterment of humanity and all… 13-1866795 · FY2023	New York, NY	$6.4M	$5.7M	$21.1M	65%	9%	20	501(c)(3)
American Society of Pain and Neuroscience INC The SOCIETY has a mission to improve education, highlight scientific curiosity, establish best practice, and… 82-5052801 · FY2024	Charleston, WV	$2.9M	$1.6M	$6.5M	85%	2%	—	501(c)(3)
The Human Factors & Ergonomics Society The society's mission is to promote the discovery and exchange of knowledge concerning the characteristics of… 95-2151714 · FY2024	Washington, DC	$2.3M	$2.8M	$933.9K	57%	0%	—	501(c)(3)
Earth & Space Research Increase societal understanding of the EARTH system through scientific RESEARCH and education. 91-1663391 · FY2024	Seattle, WA	$1.5M	$1.4M	$730.5K	80%	0%	12	501(c)(3)
National Space Society The vision of nss is people living and working in thriving communities beyond the earth, and the use of the… 23-7417411 · FY2024	Washington, DC	$1.4M	$1.5M	$6.7M	77%	5%	—	501(c)(3)
Soil and Water Conservation Society To advance the science & art of good land & WATER use. 42-0716340 · FY2024	Ankeny, IA	$1.2M	$1.4M	$2.0M	64%	7%	10	501(c)(3)
Orion Society ORION magazine invites readers into a community of caring for the planet. Through writing and art that… 22-3508064 · FY2024	Gt Barrington, MA	$1.2M	$1.3M	$786.7K	67%	12%	—	501(c)(3)
United Planet Corp Strives to create a world in which all people understand, respect, and support one another. UNITED planet's… 04-3582778 · FY2024	Boston, MA	$801.2K	$698.7K	$632.3K	96%	0%	8	501(c)(3)
The Meteoritical Society The METEORITICAL SOCIETY promotes research and education; supports young planetary scientists; publishes… 90-0870450 · FY2024	Del Mar, CA	$583.4K	$518.4K	$2.8M	91%	0%	—	501(c)(3)
History of Science Society INC To foster interest, promote discussions, and convey understanding in the HISTORY of SCIENCE worldwide. 52-6050324 · FY2024	Washington, DC	$518.1K	$865.7K	$4.4M	67%	8%	1	501(c)(3)
Empowering Action To further and promote charitable, scientific & educational purposes 46-1509861 · FY2024	Fairfax, VA	$510.2K	$407.6K	$239.7K	79%	10%	1	501(c)(3)
Explore Mars INC To educate the public about the planet MARS and promote the scientific exploration and settlement of the… 27-1811686 · FY2024	Washington, DC	$441.4K	$432.4K	$24.7K	77%	4%	2	501(c)(3)
Global Exploration and Oceanographic Society Conserve atrisk species places in their natural environments by providing financial management infrastructure… 27-2241003 · FY2024	The Plains, VA	$426.9K	$181.1K	$449.5K	99%	0%	—	501(c)(3)
Geochemical Society To encourage the application of geochemistry to improving our understanding of the Earth and solar system. 52-0783490 · FY2025	Alexandria, VA	$417.7K	$520.9K	$4.3M	71%	12%	—	501(c)(3)
One Earth Collective The working mission of ONE EARTH COLLECTIVE is to harness the power of people through vibrant environmental… 47-1691970 · FY2024	Chicago, IL	$298.5K	$302.3K	$43.5K	74%	18%	4	501(c)(3)
Mars Society INC To further the exploration and settlement of the planet Mars. We will accomplish this through: Public… 31-1585646 · FY2024	Lakewood, CO	$284.3K	$662.7K	$495.4K	93%	0%	—	501(c)(3)
Ecological Options Network Our mission is to find, document, link, map and publicize existing, up and working components of what can… 54-2100414 · FY2024	Bolinas, CA	$244.7K	$288.3K	$107.0K	98%	0%	3	501(c)(3)
Sea Research Society To explore and promote scientific and educational endeavors in any of the marine sciences or histories. 23-7425797 · FY2019	Irmo, SC	$242.8K	$206.1K	$0	81%	0%	1	501(c)(3)
Students for the Exploration and Development of Space USA The organization's purpose is to educate the public about the benefits of SPACE and provide assistance to… 80-0220235 · FY2024	Madison, AL	$227.6K	$118.6K	$1.6M	97%	0%	—	501(c)(3)
Association of Lunar and Planetary Observers Our organization supports education, outreach, and research in amateur astronomy. Our mission is to… 94-3123439 · FY2025	Simi Valley, CA	$221.0K	$47.1K	$1.6M	68%	0%	—	501(c)(3)
National Free Flight Society To promote the ideas and scientific development of FREE FLIGHT. 38-2231086 · FY2024	Weatherford, TX	$188.4K	$135.4K	$1.2M	96%	1%	—	501(c)(3)
US Space Walk of Fame Foundation INC Our purpose and governing mission are "preserving achievement; inspiring innovation."to preserve the history… 59-3267408 · FY2024	Titusville, FL	$187.2K	$228.2K	$624.2K	76%	6%	—	501(c)(3)
Society for Judgement and Decision Making Incorporated The mission of the society is the advancement and diffusion of knowledge about human judgment and decision… 35-1699981 · FY2025	Tallahassee, FL	$169.3K	$203.9K	$570.2K	100%	0%	—	501(c)(3)
Astronomical Society of Kansas City To provide for the support, education, observation and research opportunities and resources for members and… 44-6010775 · FY2023	Overland Park, KS	$83.7K	$41.6K	$450.7K	87%	0%	—	501(c)(3)
Society for Scientific Exploration 54-1191441 · FY2024	Stillwater, OK	$70.1K	—	$57.8K	—	—	—	501(c)(3)
The Deep Space Exploration Society Foster the scientific EXPLORATION and understanding of SPACE through education and the promotion of research… 84-1178383 · FY2024	Colorado Spgs, CO	$61.0K	—	$0	—	—	—	501(c)(3)
Center for Research on the Changing Earth System To perform and advance basic scientific RESEARCH for public dissemination and benefit on topics relating to… 52-2360982 · FY2022	Clarksville, MD	$0	—	$0	—	—	2	501(c)(3)

2,046,138

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Public data from IRS Form 990 e-file & Business Master File. A 990 shows reported financial activity, not measured program outcomes. Assets are from the IRS BMF and may lag the latest filing; fundraising cost is fundraising expenses as a share of total expenses. · philanthropy.org