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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June Meeting: The Birth of the Moon

  • willow recreation center 3600 Lexington Dr Hoffman Estates, IL, 60192 United States (map)

Speaker: Mark Christensen of the NSA.

Title: "The Birth of the Moon".

Abstract: Our moon appears to be a unique object in the solar system. Compared to its'  primary (Earth) it is larger than any other satellite and has and will have a greater influence on its' primary rotational period. This talk explores the history of the various theories about how our Moon formed and concludes with a discussion of the currently favored theory of the formation of the Earth-Moon system.