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

PANSTARRS information

Comet C/2012 S1 (ISON)

ISON information

Issues

March 2007

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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
What secrets lurk in the brightest galaxies?
By Bruce Dorminey
Violent, erratic behavior powers jets within blazars, the most manic galaxies.
pg. 26
Raising the curtain on extreme stars
By Tod E. Strohmeyer
Superdense neutron stars show astronomers exotic worlds of pressure, magnetism, and gravity.
pg. 32
By Francis Reddy
Computer simulations provide unique insights into how stars explode.
What makes stars explode?
By Francis Reddy
Sound waves in collapsing stars may produce supernova explosions.
pg. 38
By Francis Reddy
For the first time, simulations track intensified magnetic fields as neutron stars merge.
The Livio Code
By Adam Frank
Astronomer Mario Livio believes symmetry rules the universe - from shapes of planetary nebulae to the complexities of the multiverse.
pg. 52
Touchdowns on other worlds
By Francis Reddy
Thirty-nine spacecraft have returned data from 6 worlds.
pg. 58
See winter's best planetary nebulae
By Steve Gottlieb
These easy-to-observe objects offer a variety of smoke rings, spheres, and colored disks.
pg. 60
By Michael E. Bakich
Use these precautions to make your winter observing safe and productive.
How to choose a Hydrogen alpha filter
Add one of these filters to your observing kit, and you'll see the Sun in a whole new light.
pg. 66
By Rod Pommier
A Hydrogen-alpha filter will give you a new perspective on our daytime star.
How to search for supernovae
By Doug Rich
Amateur astronomers are finding more supernovae than ever. Follow these tips and join the hunt.
pg. 70
Attend an Internet star party
By Phil Harrington
Online astronomy groups let amateurs discuss observing, equipment, and the day''s hottest issues.
pg. 74
By Michael E. Bakich
Internet Relay Chat brings amateur astronomers from around the globe together to talk turkey about their passion.
Celestron's new Schmidt-Cassegrain
By Phil Harrington
This new 6-inch telescope offers high-quality Schmidt-Cassegrain optics in a portable package.
pg. 76
Departments
This month in Astronomy
New faces at Astronomy
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Letters
Bob Berman's strange universe
Glenn Chaple's observing basics
Ease into the Messier marathon
Phil Harrington binocular universe
The sky's "Best in show"
Stephen James O'Meara's secret sky
Solar mindfreak
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Does water flow on Mars today? and more
The sky this month
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