Chicago
Astronomical
Society

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

• Observing
• Planned Events
• Join us!
• Astro-links
• Officers
• About the CAS

Absolutely nothing happened in Sector 83 by 9 by 12 today.

Our next meeting is planned!
Click here for details!

The Society would like to thank Mr. Edward Rafacz for his inspiring lecture Going to the Moon: to Find, Learn, and Become at our Sept. 14 , International Observe the Moon Night meeting.
You can find links to his online content on our Astro-links page.

Dark Sky Alert!

Please darken our skies by turning off any unneeded outdoor lighting between the hours of 11 PM and 6 AM. A great many migratory birds will pass over Chicago between now and Novermber 30.
Let's please not confuse them needlessly.

Scouts, BSA - Astronomy Merit Badge

The Chicago Astronomical Society is a proud member of the Astronomical League

The Chicago Astronomical Society is part of the