ADLER PLANETARIUM

Financials

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990 for the year ended June 30, 2025, highest compensation first.

Address and contacts

Address (IRS master file)

1300 S DUSABLE LAKESHORE, CHICAGO, IL 60605-0000

Principal officer (990 for 2024)

ALEC GUROFF, 1300 S DUSABLE LAKE SHORE DRIVE, CHICAGO, IL 60605

Signed the 990

ALEC GUROFF, INTERIM CFO

Phone

(312) 322-0327

Website

WWW.ADLERPLANETARIUM.ORG

Return prepared by

GRANT THORNTON ADVISORS LLC

Mission

THE ADLER PLANETARIUM ('ADLER') IS A NOT-FOR-PROFIT CULTURAL INSTITUTION WHOSE MISSION IS TO CONNECT PEOPLE TO THE UNIVERSE AND EACH OTHER UNDER THE SKY WE ALL SHARE. IT ASPIRES TO BE THE WORLD'S PREMIER CENTER FOR ENGAGING IN ASTRONOMY AND SPACE SCIENCE.

Program accomplishments

• WHETHER THE ADLER PLANETARIUM IS INTRODUCING A GUEST TO THE RING NEBULA, A NEIGHBORHOOD SCHOOL TO A COMMUNITY PARTNER, A RESEARCH TEAM TO A NETWORK OF CITIZEN SCIENTISTS, OR ONE STAFF MEMBER TO ANOTHER, THE MUSEUM'S FOCUS ON MEANINGFUL CONNECTIONS DATES BACK NEARLY A CENTURY. THE ADLER TYPICALLY HOSTS APPROXIMATELY A HALF A MILLION VISITORS EACH YEAR AND REACHES MILLIONS MORE THROUGH YOUTH STEAM PROGRAMS, NEIGHBORHOOD SKYWATCHING EVENTS, PEOPLE-POWERED RESEARCH, AND OTHER OUTREACH EFFORTS. TODAY, THE ADLER IS ALSO BRINGING OUR UNIQUE APPROACH - SCIENTIFIC EXPLORATION ROOTED IN COMMUNITY AND CONNECTION - TO GUESTS FROM AROUND THE WORLD WHO CAN ENJOY THE DIGITAL ADLER FOR THEIR OWN HOMES, LIBRARIES, SCHOOLS OR OFFICES. WITH THE ADLER'S SUPPORT, PEOPLE OF ALL AGES, BACKGROUNDS, AND ABILITIES GAIN THE CONFIDENCE TO EXPLORE THEIR UNIVERSE TOGETHER AND RETURN TO THEIR COMMUNITIES READY TO THINK CRITICALLY AND CREATIVELY ABOUT ANY CHALLENGE THAT COMES THEIR WAY. THE MUSEUM HAS AN ONLINE TICKETING PLATFORM, AND AN OPERATING MODEL THAT HAS SIGNIFICANTLY IMPROVED PER CAPITA TICKET REVENUE THROUGH CHANGES MADE SINCE THE COVID PANDEMIC. THIS INCLUDES A SCHEDULE OF PUBLIC HOURS EVERY WEDNESDAY EVENING FOR OUR EXHIBITIONS, SKY SHOWS, AND TELESCOPE VIEWING. NEW CONTENT OFFERINGS, LIKE AN AWARD-WINNING, ORIGINAL PLANETARIUM SHOW NIYAH AND THE MULTIVERSE AND A NEW EXHIBITION OTHER WORLDS, SUPPORT GOOD ATTENDANCE. SCHOOL-GROUP-ONLY DAYS ARE PROVIDING MEANINGFUL EXPERIENCES AT THE MUSEUM FOR 10,000S OF EDUCATORS AND THEIR STUDENTS. IN 2024, A MAJOR RENOVATION WAS COMPLETED OF AREAS USED TO CARE FOR THE ADLER'S HISTORIC ASTRONOMY ARTIFACTS, ONE OF THE WORLD'S MOST IMPORTANT COLLECTIONS TELLING THE STORY OF THE HUMAN CONNECTION WITH THE SKY. ADLER IS CONTINUING ITS ENGAGEMENT IN ONLINE SPACES, WELCOMING MILLIONS OF PEOPLE AROUND THE WORLD INTO ADLER EXPERIENCES, THROUGH STORYTELLING AND ENGAGING DIRECTLY IN SCIENCE AND DISCOVERY. ZOONIVERSE.ORG, A COLLABORATION BETWEEN CHICAGO'S ADLER PLANETARIUM, THE UNIVERSITY OF OXFORD, AND THE UNIVERSITY OF MINNESOTA, IS THE WORLD'S LARGEST PLATFORM FOR PEOPLE-POWERED RESEARCH. IT IS MADE POSSIBLE BY VOLUNTEERSALMOST 3 MILLION REGISTERED PARTICIPANTS AROUND THE WORLDWHO COME TOGETHER TO ASSIST PROFESSIONAL RESEARCHERS WHOSE WORK WOULD NOT BE POSSIBLE, OR PRACTICAL, OTHERWISE. ZOONIVERSE RESEARCH RESULTS IN NEW DISCOVERIES, DATASETS WHICH ARE USEFUL TO THE WIDER RESEARCH COMMUNITY, AND NUMEROUS PUBLICATIONS. EACH MONTH PARTICIPANTS SUBMIT OVER 6 MILLION CLASSIFICATIONS, PART OF THE MORE THAN 940 MILLION "ACTS OF SCIENCE" COMPLETED SINCE THE FOUNDING IN 2009. 150+ RESEARCH INSTITUTIONS PARTNER WITH ADLER'S ZOONIVERSE TO LEAD MORE THAN 100 PARTICIPATORY SCIENCE PROJECTS EACH YEAR, RESULTING IN OVER 500 PEER-REVIEWED PUBLICATIONS TO DATE. THROUGH A RICH ARRAY OF DIGITAL PROGRAMMING, FROM OUR SKYWATCH WEDNESDAY ONLINE PLANETARIUM SHOW TO OUR SKY OBSERVER'S HANGOUT YOUTUBE LIVESTREAM EVENTS WITH OUR PUBLIC OBSERVING TEAM TO OUR WOW! SIGNAL SCIENCE SKETCH COMEDY AND MUSICALS TO OUR ONLINE GOOGLE ARTS & CULTURAL EXHIBITIONS, THE ADLER HAS CONTINUED TO PROVIDE A RICH ARRAY OF OPPORTUNITIES TO FOSTER CONNECTIONS AND CREATE SPACE FOR THE WONDERS OF OUR UNIVERSE AND CASTING SCIENCE AS THE STORIES OF HUMANITY. ADLER TEENS CONTINUED TO WORK CLOSELY WITH ADLER SCIENTISTS AND ENGINEERS TO ADVANCE THE FIRST-EVER COMPREHENSIVE LIGHT-POLLUTION SURVEY OF CHICAGO. FAR HORIZONS TEENS INVESTIGATED HOW LIGHT POLLUTION AFFECTS TREES ON THE MUSEUM CAMPUS, WHILE THE YOLO TEENS IN LITTLE VILLAGE ENGAGED THEIR SCHOOL AND BROADER COMMUNITY IN LIGHT-POLLUTION RESEARCH AND LOCAL ADVOCACY EFFORTS. OUR LONG-RUNNING HIGH-ALTITUDE BALLOON PROGRAM AND GROUND-BASED OBSERVING NETWORK CONTINUE TO MONITOR LIGHT POLLUTION ACROSS CHICAGO AND OTHER URBAN ENVIRONMENTSCRITICAL WORK AS CITIES RAPIDLY EVOLVE AND DEPLOY NEW LIGHTING SOLUTIONS. THIS YEAR ALSO SAW DEEPENING COLLABORATIONS WITH THE NATIONAL PARKS SERVICE AS WELL AS THE URBAN WILDLIFE INSTITUTE AT THE LINCOLN PARK ZOO TO STUDY HOW ARTIFICIAL LIGHT AFFECTS WILDLIFE IN DENSE URBAN ECOSYSTEMS. TOGETHER, THESE EFFORTS DEEPEN SCIENTIFIC UNDERSTANDING, STRENGTHEN COMMUNITY ENGAGEMENT, AND EMPOWER YOUNG PEOPLE TO CONTRIBUTE MEANINGFULLY TO RESEARCH AND ENVIRONMENTAL STEWARDSHIP. ADLER AND CHICAGO-AREA ASTRONOMERS INTERACT DIRECTLY WITH MUSEUM GUESTS SEVERAL DAYS EACH WEEK THROUGH OUR GROWING ASTRONOMY CONVERSATIONS PROGRAM. THIS PROGRAM BRINGS CHICAGOLAND ASTRONOMERS INTO REAL-TIME DIALOGUE WITH VISITORS; A RARE AND MEMORABLE EXPERIENCE, AS MOST PEOPLE HAVE NEVER HAD THE CHANCE TO MEET AN ASTRONOMER. WE SCALE THE PROGRAM FAR BEYOND THE CAPACITY OF OUR SMALL STAFF BY TAPPING INTO CHICAGO'S EXTRAORDINARILY RICH SPACE-SCIENCE ECOSYSTEM. EACH YEAR, MORE THAN 100 LOCAL RESEARCHERS SIGN UP TO PARTICIPATE, MANY OF WHOM RETURN YEAR AFTER YEAR. ALL SPEAKERS RECEIVE SCIENCE-COMMUNICATION TRAINING FROM ADLER EXPERTS TO HELP THEM ENGAGE EFFECTIVELY WITH PUBLIC AUDIENCES. ASTRONOMY CONVERSATIONS IS OFFERED EVERY WEDNESDAY, THURSDAY, AND SATURDAY THROUGHOUT THE YEAR, CREATING TENS OF THOUSANDS OF INTERACTIONS ANNUALLY BETWEEN GUESTS AND WORKING ASTRONOMERS. IT PROVIDES A CONDUIT FOR SHARING CUTTING-EDGE DISCOVERIES AS THEY HAPPEN AND SERVES AN EXPLICIT PURPOSE: BUILDING TRUST AND UNDERSTANDING IN HOW SCIENCE WORKS, CRITICALLY IMPORTANT IN TODAY'S SOCIETY. MAKING CONNECTIONS BETWEEN PEOPLE, IDEAS, AND OUR UNIVERSE DOESN'T JUST FEEL GOOD - IT DRIVES SCIENTIFIC PROGRESS. WHEN PEOPLE FEEL WELCOME IN THE SCIENTIFIC COMMUNITY, THEY DELIVER REAL RESULTS. THROUGH THE WONDER OF SPACE SCIENCE, THE ADLER CONNECTS PEOPLE, COMMUNITIES AND INSTITUTIONS SO WE CAN EXPLORE OUR UNIVERSE TOGETHER AND USE OUR COLLECTIVE KNOWLEDGE AND SKILLS TO CREATE A BETTER WORLD FOR EVERYONE.
  Expenses $12,448,285 · grants $32,196 · revenue $5,788,527

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

IRS record

EIN

36-6210902

Tax-exempt status

501(c)(3): Charitable, religious, educational or scientific organization

Foundation status

Publicly supported organization (170(b)(1)(A)(vi))

Donations deductible (Pub 78)

Public charity, 50% deduction limit

Exempt since

1968

Accounting year ends

June

Files

Form 990 or 990-EZ

Category (NTEE)

Arts, culture and humanities (A500)

Assets (IRS master file)

$72,589,492

Income (IRS master file)

$46,213,905

Filing history

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 36-6210902).

Questions about ADLER PLANETARIUM

What is the EIN of ADLER PLANETARIUM?

The employer identification number (EIN) of ADLER PLANETARIUM is 36-6210902.

Is ADLER PLANETARIUM tax-exempt?

Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1968.

Are donations to ADLER PLANETARIUM tax-deductible?

Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).

Which annual return does ADLER PLANETARIUM file?

Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.

When is the next return of ADLER PLANETARIUM due?

The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.

When did ADLER PLANETARIUM last file with the IRS?

The latest return in the IRS public files is the 990 for the year ended June 2025.

Who is the principal officer of ADLER PLANETARIUM?

The 990 for the year ended June 30, 2025 names ALEC GUROFF.

Who are the officers and directors of ADLER PLANETARIUM?

The 990 for the year ended June 30, 2025 lists 66 people; 10 received compensation from the organization, the highest $545,930 (MICHELLE B LARSON PHD, FORMER PRESIDENT & CEO (THRU 3/25)).

How much revenue does ADLER PLANETARIUM have?

On its 990 for the year ended June 30, 2025 it reported revenue of $21,973,192, expenses of $17,520,737 and total assets of $72,589,492 at year end.

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