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
• Activities
• Join us!
• Astro-links
• Baloney Detector
• Officers
• About the CAS

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

Next meeting will be on Saturday, June 7, 2025 Details!

The Society would like to thank Dr. Jim Sweitzer for his lecture The Journey of a Photon: From a Galaxy Far, Far Away to The Mind's Eye at our May 3 meeting.

Our 2025 meeting schedule is planned!
Click on the "Planned Events" menu item above for the complete list.

Also, please note the addition of a "Baloney Detector" link in the menu above.

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

The Chicago Astronomical Society is part of the