Year of the Comet
Comet C/2011 L4 (PANSTARRS)

PANSTARRS information

Comet C/2012 S1 (ISON)

ISON information

Issues

January 2000

This issue is currently out of stock and will not be reprinted.
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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. 
Features
The Evolving Sun
In this special issue, ASTRONOMY takes a detailed look at our star.
pg. 43
Curtain Call
By Thomas Hayden
The sun may seem a constant source of light and heat, but within a billion years it will fry our planet.
pg. 44
Exodus from Earth
By Tom Siegfried
Before our home world becomes uninhabitable, we'll be forced to seek a new home among the stars.
pg. 50
When the Solar Wind Blows
By Katy Human
Jo Ann Joselyn, who predicts the effects of the sun on Earth and in space, looks forward to a busy year.
pg. 56
Quaking Sun
By Tony Ortega
A pioneer in the tongue-twisting field of helioseismology, Jack Harvey probes the sun's dynamic interior.
pg. 60
Underground Astronomer
By Marcia Bartusiak
For three decades, Raymond Davis has searched for solar neutrinos from beneath the Black Hills, yet he can't find as many as theory predicts.
pg. 64
Celestial Portraits: Perseus and Taurus
By Tom Polakis
You won't regret spending a chilly winter night exploring the big, bright star clusters in these constellations.
pg. 80
Deconstructing the Millennium
By David H. Grinspoon
The passage of a thousand years may seem like a big deal, but it's really just a relic of our counting system.
pg. 88
Ten Top Picks
By Martin Ratcliffe
Sure, Comet Shoemaker-Levy 9 and the 1991 solar eclipse were awesome, but did they crack our list of the century's best sky events?
pg. 94
The Sunny Side of Stargazing
By Phil Harrington
This year promises to be a good one for observers of our daytime star, as sunspot activity peaks.
pg. 100
Departments
Behind the Scenes
Busy Sun
Talking Back
AstroNews
- Pluto Fragments May Be Collision Relics
- New Comet Bright in July
- Neptune and Uranus Are Gems
- Chandra Scope Reveals Mysterious Ring
- NASA Scrambling to Surmount Orbiter Loss
- Gamma-Ray Burst May Have Spawned a
Supernova
- Supernova Clues Found in Antarctic Ice
- Undiscovered Moons May Shape Neptunian
Ring
- Mars Craters Lost at Sea?
Sky Show
A spectacular total lunar eclipse awaits the Americas and Europe this month.
Ask Astro
Star Stuff
Products
- Hubble Deep Fields Poster
- Nikon Binoculars
- Pulsating Eyepiece Illuminator
Books
- Journey Beyond Selene
- Johannes Kepler and the New Astronomy
- A Field Guide to the Stars and Planets
Bytes
- DigitalSky Voice 2.02
Looking Ahead
Advertiser Index
Hot Shots
The Race for Darkness
Ultimate Exposure
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