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.
The science of comets
Scientists have sent 12 missions to explore comets. Here’s what they’re learned about these relics from the early solar system.
Web Extra: A gallery of SOFIA images
Not all of the pictures made it into the magazine. Here are 10 more from Sarah Scoles’ trip to the stratosphere.
Comets: From superstition to science
For thousands of years, scientists thought comets lived within Earth’s atmosphere, and nearly everyone believed these celestial visitors delivered death and destruction with their tails.
Web Extra: Comets in the news — old news
Find out what late 19th- and early 20th-century newspaper reporters had to say about comets.
Illustrated: Anatomy of a comet
Slip into a coma, sweep up a dust tail, and brace yourself against the solar wind.
20 bright comets of the past 50 years
Each of these cosmic visitors of the past half-century told a unique story and captured the attentions of observers and imagers.
Web Extra: Photogenic comets of the 21st century
Just because of a comet isn’t “Great” doesn’t mean it isn’t worthy of observation.
Comet ISON blazes into glory
This frozen ball of gas and dust puts on a show in the predawn sky before reaching peak brightness in late November as it skims above the Sun’s surface.
Web Extra: Everything you need to know about Comet ISON
Check out Astronomy.com’s complete coverage of this visitor from the outer solar system.
Totality crosses Africa
Exotic locations, safaris, and an eclipse’s shadow across the Dark Continent will lure travelers to this event November 3.
Web Extra: A solar eclipse gallery
Review the last 12 terrific eclipses of the Sun.
A field trip to the stratosphere
Associate Editor Sarah Scoles takes a ride with SOFIA, a telescope that always flies first class.
Web Extra: Watch a Comet 103P/Hartley flyby
In November 2010, the EPOXI spacecraft flew by the dusty snowball Hartley 2.
Sky this Month
StarDome and Path of the Planets
In Every Issue
From the Editor