The recent total solar eclipse visible from Chile and Argentina had some surprises: Photos revealed a total solar eclipse and comets not seen by eye.
Amateurs have found and visually confirmed a planetary nebula, St-Dr-1.
A well-traveled geophysicist recounts his curious findings at a prominent geographic benchmark in the Southern Hemisphere.
Amateur astronomer Jeffrey Kretsch tells how a local astronomical society turned a former Cold War missile control site into a thriving observatory park.
Can a $400 observatory built from old shipping crates and a dome riding on golf balls withstand the harsh environments of the Rocky Mountains for 37 years?
Reader Michael Rossacci shares the story behind his capture of the January 20, 2019, total lunar eclipse.
Amateur astronomer Rick Johnson undertook the monumental task of building his own observatory and compiling a catalog of objects he has observed.
Fifty years ago today was the launch of Apollo 8: the first manned mission to (and around) the Moon. In England — far from the launch but not the excitement — a young man glimpsed the rocket on its way.
Inspired by a "Sun, Moon & Planets" column, the author spent the spring of 2017 tracking Venus's retrograde motion across the sky, exploring the relationship between the orbits of Venus and the Earth pointed out by Copernicus.
The authors had the chance of a lifetime to see true dark skies when they joined the June 2018 cohort of the Astronomy in Chile Educator Ambassadors Program (ACEAP).
The author shares his encounters with Mars at perihelic opposition over the course of his years as an amateur astronomer.
A dazzling day greeted S&T Observing Editor Diana Hannikainen when she attended the Stellafane Convention this past August, but it was the dome of night sky that truly sparkled.
Join the author for a wandering walk through a night's observing. Sometimes it's best to leave your plans behind.
Frustrated with the high cost of a proprietary Go To, the author developed a free, open source, DIY option, rDUINOScope Boiana.
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…