Public Charity

Planetary Science Institute

Planetary Science Institute, of Tucson, AZ, is a Public Charity tracked in Imperigo's IRS 990 database. The 2025 filing shows $17.0M in revenue, $17.3M in expenses, $4.8M in total assets. 73 publicly reported grants to this organization, totaling roughly $6.1M, appear in IRS filings.

EIN: 330175263 Tucson, AZ Latest filing: 2025
Total Revenue$17.0M
Total Expenses$17.3M
Total Assets$4.8M
Grant Records73
Funding Total$6.1M
Filing Years2021–2025

Mission

The Planetary Science Institute exists to: enable our researchers to study the origin, characteristics, and evolution of planetary systems, including our solar system, Earth itself, and planetary systems around other stars; enable our educators to convey the resulting knowledge to the scientific community, and to the public at large to promote science education and science literacy; enable our people to use this knowledge to advance human activity in space and shape the future of robotic exploration of the solar system.

Where $100 goes at Planetary Science Institute

How Planetary Science Institute divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.

$90 Programs the work itself
$10 Management running the organization
$0 Fundraising none reported

No fundraising costs are reported. That often means fundraising runs through a separate affiliated organization that files its own return.

Inside the $90 for programs

$90
The Planetary Science Institute (PSI) is an independent nonprofit science research and educational organization with an established record of excellence in solar system exploration, comparative planetology, science education…
All program spending
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Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.

Sample Grants Received

LOWELL OBSERVATORY
2025
NASA GRANT - SUBAWARD COLLABORATION RESEARCH
$67,405
ASSOCIATION OF UNIVERSITIES FOR RESEARCH IN ASTRONOMY INC
2024
SCIENTIFIC RESEARCH ON DATA FROM HUBBLE SPACE TELESCOPE AND/OR JAMES WEBB SPACE TELESCOPE
$258,434
JOHNS HOPKINS UNIVERSITY
2024
SUB-AWARD
$227,437
SETI INSTITUTE
2024
RESEARCH
$187,842
$101,904

Showing up to 5 of 73 total records — full history available with membership.

Officers & Directors

Trustee Alison Nordt
CEO / Trustee (effective May 2025) Amanda R Hendrix
Trustee Arun Seraphin
Trustee Dan Dumbacher
Senior Scientist Eldar Z Noe Dobrea
Senior Scientist Jonathan M Lilly

Officer compensation and complete director data available with membership.

Top Grant Purposes

Research & Policy
$3,309,107 49 grants
General Support
$2,451,757 19 grants
Fundraising & Sponsorship
$269,564 1 grant
Education
$83,006 4 grants

Financial Trends

Year Revenue Expenses Assets
2025 $17.0M $17.3M $4.8M
2024 $17.9M $17.8M $5.7M
2023 $17.9M $17.6M $6.3M
2022 $18.5M $18.2M $5.9M
2021 $17.3M $15.5M $5.3M

Between 2021 and 2025, reported annual revenue held roughly steady at around $17.0M, with total assets most recently reported at $4.8M.

Interactive year-over-year charts and full filing details available with membership.

See the full picture for Planetary Science Institute

Complete financials, all 73 grant records, officer compensation, year-over-year trend charts, a geographic grant map, and data exports — across 880,000+ organizations.

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