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California · Public charity

The Planetary Society

THE PLANETARY SOCIETY empowers the world's citizens to advance space science and exploration. Together with our members, THE PLANETARY SOCIETY develops space technology, guides future space policy, and inspires people of all ages to value the adventure of exploration and the joy of discovery.

$115k
Granted FY2025(still arriving)
1
Itemized grants FY2025
1
Organizations funded FY2024
100%
First-time grantees FY2024
Read the full brief
Itemized, FY2025
$25k
The rest is grants the schedule does not break out
Median grant, FY2025
$25,000
Largest grant, FY2025
$25,000
Organizations funded a year
1 to 4
FY2017 to FY2024
Total assets, FY2025
$7.8M

How open it is to new grantees

In FY2024, 100% of the organizations The Planetary Society funded were first-time grantees, receiving 100% of its grant dollars.

New vs renewed · share of each year

In FY2024, 0% of grant dollars renewed an existing relationship; $25k went to new ones.

50%100%’18’19’20’22’23’24
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’22’23’24
Science & TechEducationArts & CultureOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving1$25k0%
FY20241$25k100%
FY20231$50k100%
FY20223$70k100%
FY20201$25k100%
FY20193$4k100%
FY20184$46k100%
FY20171$5kn/a
100% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Education$199kScience & Tech$128kArts & Culture$1k

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

IL
MA
CT
CA
AZ
KS
SC
DC

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Florida Institute of Technology Inc$50,00010%
Lowell Observatory$25,00010%
Honeybee Robotics Ltd$25,0001n/a
Center for Solar System Studies$8,9951n/a
Northeast Kansas Amateur Astronomers League Inc$6,8601n/a
Astronomical Research Institute Inc$5,55011%
American Astronomical Society$4,50010%
The National Space Club and Foundation$2,30510%
The Adler Planetarium$1,00010%
International Association of Astronomical Artists$2001n/a

Plus 4 recipients with no EIN on record ($120k), not named here.

Compare The Planetary Society with peer funders

About The Planetary Society

How much does The Planetary Society give?
The Planetary Society reported 1 itemized grants totaling $25,000, out of $114,962 in total grant expense reported on the return in its FY2025 IRS filing. It funded between 1 and 4 organizations a year over FY2017 to FY2024.
What does The Planetary Society fund?
By grant dollars over FY2017 to FY2025, its largest causes are Education (61%), Science & Tech (39%), Arts & Culture (0%).
Who are The Planetary Society's largest grantees?
By total granted over FY2017 to FY2025: Florida Institute of Technology Inc ($50k), Lowell Observatory ($25k), Honeybee Robotics Ltd ($25k).
Does The Planetary Society fund new organizations?
In FY2024, 100% of the organizations it funded were first-time grantees.
Where is The Planetary Society based?
The Planetary Society is based in CA.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 16 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990 e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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