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The Revolution of the Four Galilean Moons

The rich tapestry of features in the four Galilean moons continues to revolutionize our understanding of how our Solar System came to be and our own place in it.

Robert Marx May 1, 2025

A Newly Discovered Nova in Hercules

On June 12th a Japanese amateur astronomer, Seiji Ueda, discovered a nova in the constellation Hercules. The nova peaked at an estimated apparent magnitude 5.5,

Alfredo Viegas July 10, 2021

Hell Gate’s Devil-Horned Eclipse

If you haven’t heard by now, there will be an annular eclipse this June 10th, or Ring of Fire as witnessed by some Canadians in

Tom Haeberle June 5, 2021

Skyline and Sunshine

Check out these beautiful photos by Alexander Krivenyshev! For more from Alexander, visit his website, WorldTimeZone.com, his Instagram, and his Twitter! Two Planets and the

Alexander Krivenyshev May 1, 2021

Eyepiece, the Amateur Astronomers Association monthly newsletter, covers lectures and other astronomy events in New York City; offers commentary, tips on observing and equipment and summarizes astronomy discoveries and other general news in astronomy and astrophysics. Each month, our “What’s Up in the Sky” column discusses what can be seen in the skies during the upcoming month. Members do all the writing for Eyepiece, and new contributors are always welcome. Submit today!

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