SUNSET: 
Do Look Up: Asteroid Apophis Will Fly By Earth in Three Years
The close pass of Apophis is nothing to fear. Will you be watching on Friday, April 13, 2029, when this asteroid glides across the sky?
In the Footsteps of Galileo
Sky & Telescope’s 2025 “Galileo’s Italy” tour offered much more than sightseeing, as participants enjoyed multiple opportunities to stand on astronomical hallowed ground.
New U.S. Coin Honors Astronomer Vera Rubin
The U.S. Mint has issued a quarter-dollar coin celebrating the life and work of the co-discoverer of dark matter in galaxies.
Supernova Echoes Probe Clouds in the Milky Way
As a blast from the past reverberates through our galaxy, it illuminates the fine structure of dusty gas that may someday form new stars.
Apps to Help You See the Solar Eclipse
For the April 8th eclipse, mobile apps offer everything from weather forecasts to local circumstances. Here's a review of eclipse apps that you might find useful on the big day.
How Dark Does It Get During a Total Solar Eclipse?
Totality may not be quite as dark as nighttime, but the difference between 99% obscuration and 100% is still night and day.
A Celebration of Jay Pasachoff (1943–2022)
Jay M. Pasachoff, Chair of the Astronomy Department, Director of the Hopkins Observatory, and Field Memorial Professor of Astronomy at Williams College in Williamstown, Massachusetts, succumbed to cancer on Sunday morning, November 20th.
Solar Eclipse Apps You'll Need on Eclipse Day
Want to know when the eclipse begins and ends in your hometown, or what's the quickest way to the path of totality? Looking for an eclipse countdown timer? There are eclipse apps for that!
Call for Nominations: Chambliss Amateur Achievement Award
The Chambliss Amateur Achievement Award recognizes excellence in astronomical research by American amateur astronomers. Nominations are now open!
40th Anniversary of Viking's Red Planet Rendezvous
Some 200 of the mission’s surviving scientists and engineers and their families, along with many younger space explorers inspired by the Vikings, gathered to celebrate the 40th anniversary of the Viking 1 landing.
Some Pointers on Using Laser Pointers
Many stargazers use handheld laser pointers to show the way to stars and constellations. But these devices can be dangerous if used carelessly. Here are some tips on how to avoid trouble.
Planning for America's Great American Eclipse in August 2017
Dozens of solar specialists are coordinating outreach activities for a coast-to-coast total solar eclipse that's only two years away.
Turn On to the International Year of Light!
The International Year of Light is well underway and provides a host of opportunities for astronomy outreach. Find out what programs and resources are available!
Hubble Servicing Delayed
NASA's upcoming service call on the Hubble Space Telescope won't happen till late September or early October.
Join the Hunt for Supernova Light Echoes
In a fascinating article in the June 2008 issue of Sky & Telescope, astronomer Douglas L. Welch (McMaster University, Canada) explains how amateur astronomers can help professionals observe light from supernova explosions that rocked our Milky Way Galaxy hundreds of years ago. The key is to use CCD imaging to…
Equipment: Guides & Recommendations
Telescope Companies Bury Hatchet
A dispute between rival telescope companies has ended with an amicable settlement and a clear definition of "Ritchey-Chrétien."
A Neutron Star's Hard Core
Astronomers have found some pulsars that appear unusually massive, calling into question our understanding of neutron-star interiors.
Astronomers Find Double Einstein Ring
A unique example of gravitational lensing in the universe gives clues to the distribution of dark matter in galaxies.
Stars in the Middle of Nowhere
Astronomers have found several young star clusters that don't belong to any particular galaxy.
High Hopes for Hubble
Preparations are well under way for the August 2008 servicing mission to the Hubble Space Telescope.
