· Public charity
American Astronomical Society
The AMERICAN ASTRONOMICAL SOCIETY (aas), established in 1899, is the major organization of professional astronomers in north america.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2024.
Where the money goes
Your grants by size, and where they go.
The 3 grants below total $266,437 — the rows itemised in this filing. The $941,589 headline is the total grant expense reported on the return, so the remaining $675,152 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2024
- $10k–50k2 grants · $35k
- $50k–250k1 grant · $231k
| Recipient | Amount |
|---|---|
| NORTHWESTERN UNIVERSITY | $231,437 |
| JOHN HOPKINS UNIVERSITY | $25,000 |
| FLORIDA ATLANTIC UNIVERSITY | $10,000 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Dollar for dollar, your grants (FY17–24) land where the poverty rate runs at 13%, against an area that typically sits at 10%. 85% of your dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
Grants abroad, by region — $176k on the FY2024 return
Schedule F, as filed: 4 regions, $30k to organizations and $146k to individuals. The IRS asks for region and purpose, not the recipient, so no country or grantee can be named here.
Stated purpose: STIPEND
Stated purpose: STIPEND
Stated purpose: STIPEND
Stated purpose: STIPEND
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving. Grants abroad on Schedule F are filed by region, purpose and amount with no recipient name, so they are shown by region and cannot be placed on the country map or matched to a grantee.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 69% of American Astronomical Society’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
10 repeat relationships — 3 still active in FY2024, 7 since wound down.
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
Northwestern University2× · 2023–2024 · $403k · revenue +26%
SMITHSONIAN INSTITUTION4× · 2018–2023 · $125k · revenue +33%
JOHNS HOPKINS UNIVERSITY4× · 2018–2024 · $115k · revenue +51%
Funded once
- TSTHE STORY COLLIDER INCone grant, 2018 · $8k · revenue -64%
- SFSOCIETY FOR ADVANCEMENT OF CHICANOS AND NATIVE AMERICANS IN SCIENCEgraduatedone grant, 2017 · $6k · revenue +122%
- SISCIENCECOUNTS INCone grant, 2020 · $5k · revenue -69%
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
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For reference, the grantee most central to the portfolio’s shape is Ithaka Harbors Inc and the most unlike its peers is Sciencecounts Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
13 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 13 of the 15 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds Northwestern University ↗
- Who funds SMITHSONIAN INSTITUTION ↗
- Who funds JOHNS HOPKINS UNIVERSITY ↗
- Who funds COMMUNITY INITIATIVES INC ↗
- Who funds ITHAKA HARBORS INC ↗
- Who funds AMERICAN INSTITUTE OF PHYSICS INC ↗
- Who funds Cornell University ↗
- Who funds NANTUCKET MARIA MITCHELL ASSOCIATION IN ↗
- Who funds THE STORY COLLIDER INC ↗
- Who funds SOCIETY FOR ADVANCEMENT OF CHICANOS AND NATIVE AMERICANS IN SCIENCE ↗
- Who funds SCIENCECOUNTS INC ↗
- Who funds President and Fellows of Harvard College ↗
- Who funds OHANA WAA ↗
Government reliance of your grantees
Every dot is one organization American Astronomical Society funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal, a single department, or state — and drag the year to watch it move.
- Johns Hopkins University — 12% of income from government
- Nantucket Maria Mitchell Association in — 9% of income from government
- President and Fellows of Harvard College — 7% of income from government
- American Institute of Physics Inc — 0% of income from government
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.