NSA Club

Northwest Suburban Astronomers

Club Meetings: Meetings are on the Friday nearest the full moon each month.
Check our Events page for each month's meeting location.
Business Correspondence: The club's official mailing address for business correspondence is
PO Box 261, Dundee, IL 60118.

Our club is based in the northwestern suburbs of Chicago. With a wide range of interests, experience, and equipment, our membership is over 150, making us one of the largest astronomy clubs in the mid-west. Here you can find out about our public meetings, star parties, and the benefits of becoming a member. Thanks for visiting, and clear skies.


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August NSA Club Meeting

  • Willow Recreation Center 3600 Lexington Drive Hoffman Estates, IL, 60192 United States (map)

Joe DalSanto, College of DuPage, will present an introduction to the remarkable theories of relativity and how they have changed our understanding of the universe. The most important theory of physical science is Einstein’s Theory of Relativity, yet it remains mysterious to nonscientists.
The Special Theory describes how perceptions of space and time must be revised at high velocities: motion is always relative, no object can travel faster than light, and time actually slows down. The General Theory describes a new view of gravity as a distortion of spacetime; time runs slowly in gravitational fields and mysterious black holes and gravity waves exist.