Simple telescope formulas — how to calculate what you need to know about your telescopes, oculars, and binoculars.
Download the Celestial Harvest Showpiece Roster, a handy list of 300 of the best deep-sky objects to explore with telescopes from 2- to 14-inches in aperture.
During the author's May 2017 trip to Kefalonia he learned of an ancient eclipse on the neighboring island of Ithaca with ties to the Odyssey.
Inspired by his love of astronomy and struck by the unique ways in which the Game Boy Camera had been harnessed, Alex Pietrow took to the internet to see what photos of space it had taken. When he found none, he took his own.
Learn how to make a travel-friendly solar projection viewer for your telescope — just in time for the eclipse! Each summer I have the privilege to run the Student Telescope Making Program at the Table Mountain Star Party (TMSP). Over the course of a few hours, students assemble telescopes and…
Learn about solar eclipses in this DIY solar eclipse activity. All you need is a tape measure, a long stick, a small sphere, and a sunny day.
Try this easy technique to roughly polar-align your telescope mount during the day using your smartphone and a planetarium app.
The story of Steve, the mysterious pink-ribbon aurora, shows how citizen scientists are making important contributions to research and discovery.
Astrophotographer John Goldsmith chronicles his travels during Comet Hale-Bopp's famous apparition 20 years ago. His images capture what ancients might have seen 4,200+ years before.
A solar eclipse provided the perfect teachable moment in Angola, as students learned about the real sizes and distances of Earth, the Moon, and the Sun.
A lucky group of Canadian observers got to witness remarkable events as the Moon slid past Aldebaran on the night of March 4th.
By tapping into some little-know settings, you can make your iPhone use a red screen all the time at night and preserve your dark adaptation.
Still active today, the Association of Lunar & Planetary Observers and its journal got their start on March 1, 1947.
The Astronomical League, one of amateur astronomy's best institutional resources, has awarded more than 10,000 observing certificates since 1967.
"Name a star" businesses are approaching their holiday peak. But since personal star names won't be formally recognized anyway, you might as well do it for free.
If you're interested in how celestial objects reveal themselves simply by analyzing their light, you'll enjoy this free online international journal.
Inspired by a project featured in Sky & Telescope, Richard Clements and the Barnard Astronomical Society constructed a Star Walk in Harrison Bay State Park, Tennessee.
To help maintain the beautifully dark skies over Maine's Acadia National Park, this Master's thesis analyzed how the region's economy and other policy issues would be affected by stricter lighting regulations.