The world's best-selling astronomy magazine offers you the most exciting, visually stunning, and timely coverage of the heavens above. Each monthly issue includes expert science reporting, vivid color photography, complete sky coverage, spot-on observing tips, informative telescope reviews, and much more! All this in an easy-to-understand, user-friendly style that's perfect for astronomers at any level.
Top 10 exoplanets
Astronomers have discovered nearly 1,000 planets orbiting other stars. Here we highlight 10 of them.
Web Extra: Exoplanets on the edge
Many of the planetary systems orbiting other stars rank among the strangest objects humans have ever laid eyes on. Here are five more that stick out from this already eccentric crowd.
How Planck has redefined the universe
This new spacecraft has mapped the universe’s matter, refined its composition and age, and revealed thousands of radio sources.
Web Extra: How Planck maps the sky
This spacecraft has been observing the microwave sky since August 2009.
What makes a Great Comet?
Slight tweaks in the celestial recipe make a good comet great.
Web Extra: Score your favorite comets
Using Joseph Marcus’ comet scorecard, find out if your favorite comets are Great or just good.
Comet ISON brightens before dawn
This celestial visitor approaches naked-eye visibility.
Order from chaos — Genesis samples the solar wind
This NASA spacecraft captured and returned atoms from the Sun to Earth. What happened next took “recovery” to a whole new level.
10 great autumn binocular sights
Head outside to explore a nearby galaxy, a stellar waterfall, and more.
Web Extra: 10 top autumn binocular treats
All you need to enjoy these seasonal targets is a dark sky and good binoculars.
Spice up your images with Hydrogen-alpha data
Make your images shine by adding light through this narrow-band filter.
“Astronomy” tests Denkmeier’s Binotron-27
High-quality optics and superb mechanics make this accessory a winner.
The Sky this Month
StarDome and Path of the Planets
In Every Issue