Comet 21P/Giacobini-Zinner has made a grand tour of our summer sky as it approached the perihelion portion of its orbit. In September, as it passed
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!