Do you know what is gravitational lensing? How does it work? Why it exists? Join us on Friday to learn this and also Einstein rings, and their connection to dark matter. And talk to members of AAI who are always willing to share their knowledge of astronomy.

And learn about Amateur Astronomers, Inc. the Astronomy club that makes its home at Sperry Observatory located on the campus of Union College in Cranford, NJ and how you can join. And, weather permitting, we will do observing through our 2 large telescopes, a 24 inch reflector and a 10 inch refractor.

Amateur Astronomers, Inc. (also known as AAI), is 76 years young and still going strong!

See below for information about the weekly  presentations, times and locations.

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All visitors must register to enter the Sperry Observatory. Admission and programs are free of charge.

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