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Funding search

Find who already funds work like yours.

Private foundations don’t post open calls, so nobody can search them. We read IRS filings instead — 9.6 million grants from 174,053 foundations and grantmaking charities, searchable by what the money was actually for.

12 funders with a record of paying for “planetary”

Where the money went

1.0×
The Simons Foundation Inc → California Institute of Technology: $2.1M across 4 grants, latest 2023Melza M and Frank Theodore Barr → California Institute of Technology: $780K across 4 grants, latest 2024Winslow Foundation → Johns Hopkins University: $627K across 2 grants, latest 2024Gordon E and Betty I Moore Foundation → President and Fellows of Harvard College: $500K across 1 grant, latest 2022Association of Universities for Research → Planetary Science Institute: $495K across 3 grants, latest 2023John D and Catherine T Macarthur Foundation (Consolidated) → Sarah T Stewart: $375K across 3 grants, latest 2022The Virginia & Le Simmons Foundation → California Institute of Technology: $270K across 2 grants, latest 2024The Commonwealth Fund → Northeastern University: $223K across 2 grants, latest 2024The Heising-Simons Foundation → University of Florida Board of Trustees: $216K across 2 grants, latest 2023Lowell Observatory → Planetary Science Institute: $131K across 3 grants, latest 2024The Brinson Foundation → University of Arizona Foundation Lunar and Planetary Laboratory: $85K across 2 grants, latest 2024The Graham Edwin and Sharon Janosik → The Planetary Society: $6K across 4 grants, latest 2025The Simons Foundation Inc → Jet Propulsion Laboratory: $1.0M across 1 grant, latest 2024Gordon E and Betty I Moore Foundation → Johns Hopkins University: $496K across 1 grant, latest 2023Winslow Foundation → President & Fellows of Harvard College: $265K across 3 grants, latest 2022The Heising-Simons Foundation → University of Texas at San Antonio: $173K across 2 grants, latest 2024John D and Catherine T Macarthur Foundation (Consolidated) → Sarah Stewart-Mukhopadhyay: $125K across 1 grant, latest 2023The Brinson Foundation → Cornell University: $50K across 1 grant, latest 2022The Commonwealth Fund → Yale University: $36K across 1 grant, latest 2023The Simons Foundation Inc → Harvard College: $600K across 2 grants, latest 2023Gordon E and Betty I Moore Foundation → London School of Hygiene and Tropical Medicine: $302K across 1 grant, latest 2020The Heising-Simons Foundation → Regents of the University of Colorado: $160K across 1 grant, latest 2024The Simons Foundation Inc → Nasa Goddard Space Flight Center: $400K across 1 grant, latest 2022The Heising-Simons Foundation → Rector & Visitors of the University of Virginia: $128K across 1 grant, latest 2024The Heising-Simons Foundation → Regents of the University of Michigan: $125K across 1 grant, latest 2023The Heising-Simons Foundation → Brown University of Providence: $125K across 1 grant, latest 2024Gordon E and Betty I Moore Foundation → The Board of Trustees of the Leland Stanford Junior University: $108K across 1 grant, latest 2023The Heising-Simons Foundation → Regents of the University of California Santa Cruz: $58K across 1 grant, latest 2023Gordon E and Betty I Moore Foundation → Health Care Without Harm: $50K across 1 grant, latest 2023The Heising-Simons Foundation → San Diego State University Foundation: $40K across 1 grant, latest 2024Gordon E and Betty I Moore Foundation → President and Fellows of Harvard College: $30K across 1 grant, latest 2020The Simons Foundation Inc: $4.1M on this topic. Open the funder.The Simons Foundation Inc$4.1MGordon E and Betty I Moore Foundation: $1.5M on this topic. Open the funder.Gordon E and Betty I Moore Fo…$1.5MThe Heising-Simons Foundation: $1.0M on this topic. Open the funder.The Heising-Simons Foundation$1.0MWinslow Foundation: $891K on this topic. Open the funder.Winslow Foundation$891KMelza M and Frank Theodore Barr: $780K on this topic. Open the funder.Melza M and Frank Theodore Ba…$780KJohn D and Catherine T Macarthur Foundation (Consolidated): $500K on this topic. Open the funder.John D and Catherine T Macart…$500KAssociation of Universities for Research: $495K on this topic. Open the funder.Association of Universities f…$495KThe Virginia & Le Simmons Foundation: $270K on this topic. Open the funder.The Virginia & Le Simmons Fou…$270KThe Commonwealth Fund: $259K on this topic. Open the funder.The Commonwealth Fund$259KThe Brinson Foundation: $135K on this topic. Open the funder.The Brinson Foundation$135KLowell Observatory: $131K on this topic. Open the funder.Lowell Observatory$131KThe Graham Edwin and Sharon Janosik: $6K on this topic. Open the funder.The Graham Edwin and Sharon J…$6KCalifornia Institute of Technology: received $2.4M on this topicCalifornia Institute of Technol…$2.4MJohns Hopkins University: received $1.1M on this topicJohns Hopkins University$1.1MJet Propulsion Laboratory: received $1.0M on this topicJet Propulsion Laboratory$1.0MCalifornia Institute of Technology: received $780K on this topicCalifornia Institute of Technol…$780KPlanetary Science Institute: received $626K on this topicPlanetary Science Institute$626KHarvard College: received $600K on this topicHarvard College$600KPresident and Fellows of Harvard College: received $500K on this topicPresident and Fellows of Harvar…$500KNasa Goddard Space Flight Center: received $400K on this topicNasa Goddard Space Flight Center$400KSarah T Stewart: received $375K on this topicSarah T Stewart$375KLondon School of Hygiene and Tropical Medicine: received $302K on this topicLondon School of Hygiene and Tr…$302KPresident & Fellows of Harvard College: received $265K on this topicPresident & Fellows of Harvard…$265KNortheastern University: received $223K on this topicNortheastern University$223KUniversity of Florida Board of Trustees: received $216K on this topicUniversity of Florida Board of…$216KUniversity of Texas at San Antonio: received $173K on this topicUniversity of Texas at San Anto…$173KRegents of the University of Colorado: received $160K on this topicRegents of the University of Co…$160KRector & Visitors of the University of Virginia: received $128K on this topicRector & Visitors of the Univer…$128KSarah Stewart-Mukhopadhyay: received $125K on this topicSarah Stewart-Mukhopadhyay$125KRegents of the University of Michigan: received $125K on this topicRegents of the University of Mi…$125KBrown University of Providence: received $125K on this topicBrown University of Providence$125KThe Board of Trustees of the Leland Stanford Junior University: received $108K on this topicThe Board of Trustees of the Le…$108KUniversity of Arizona Foundation Lunar and Planetary Laboratory: received $85K on this topicUniversity of Arizona Foundatio…$85KRegents of the University of California Santa Cruz: received $58K on this topicRegents of the University of Ca…$58KCornell University: received $50K on this topicCornell University$50KHealth Care Without Harm: received $50K on this topicHealth Care Without Harm$50KSan Diego State University Foundation: received $40K on this topicSan Diego State University Foun…$40KYale University: received $36K on this topicYale University$36KPresident and Fellows of Harvard College: received $30K on this topicPresident and Fellows of Harvar…$30KThe Planetary Society: received $6K on this topicThe Planetary Society$6K
12 funders, 28 recipients, grants matching “planetary” only. Ribbon width is proportional to the total given; each funder has its own colour (smaller funders in gray). Hover a name to isolate its flows, click a funder to open it. Drag to move around; zoom with the buttons, a double-click, or the wheel after clicking the map.

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Source: IRS Form 990-PF Part XV and Form 990 Schedule I, tax years 2019–2025. These are grants already paid, a record of what an organization funds rather than an open call. Private foundations rarely accept unsolicited applications and the route in is usually a program officer; grantmaking charities and associations more often run real application cycles, so check their website. How this data is built, and its limits →