...to promote the interest in and advance the knowledge and understanding of astronomy,
the most ancient and the noblest of the physical sciences.

Next General Meeting
The next meeting and lecture of the Chicago Astronomical Society (CAS) will be
Saturday, May 18, 2024
at the Cernan Earth and Space Center on the campus of Triton College, River Grove, IL

Click for details

Regular meetings are held once a month

Dates may vary depending on facility availability.
Usually at 7:00 PM at the Adler Planetarium
or sometimes at Triton College.
Check our Meeting Schedule &
Hubble Lecture Series Sponsorship .

Information? Comments? Questions?
E-mail us (click here)
or write us at
Chicago Astronomical Society
P.O. Box 30287
Chicago, IL 60630-0287

We are now a Meetup Group. 
Click here

to access and join Meetup.

The Chicago Astronomical Society is proud to be a certified member of the Global Star Park Network (One Star at a Time).
Click Here for Certificate

Click here for brochure .
Click here for One Star web site.

The Chicago Astronomical Society is a proud member of the Astronomical League .
( astroleague.org )

The Chicago Astronomical Society
is part of the

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The Chicago Astronomical Society is an educationally-oriented child-safe site. We support advancement in the science of astronomy and astrophysics. This site is registered with the following ratings organization to help protect our children from inappropriate material:


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