December
2009
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The December 2009 Astronomy unveils the latest images from the repaired Hubble Space Telescope, explains what neutrinos can tell us about the universe, teaches beginners how to observe comets, and more. The issue also includes Astronomy's "Sky Guide 2010," a 16-page preview of next year's noteworthy sky events. Video: Editor David J. Eicher previews the December 2009 issue.
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We're sorry. This issue is currently out of stock and will not be reprinted.
Features
Astronomy magazine's Sky Guide 2010
Bright planets, streaking meteors, and total eclipses of the Sun and Moon highlight an exceptional observing year.
By Martin Ratcliffe and Richard Talcott
Hubble's grand new vistas
Early results from the space telescope's new camera and spectrograph prove there's a lot of life left in the aging observatory.
By Richard Talcott
What can neutrinos tell us about the universe?
Astronomers are studying subatomic particles from supernovae and other energetic phenomena, but such particles are difficult to detect.
By James Trefil and Wanda O’Brien-Trefil
Many facilities have been involved in searching for these mysterious particles.
By Liz Kruesi
Top 10 winter Milky Way treats
These must-see star clusters and nebulae look their best in this season's crisp air.
By Michael E. Bakich
These beautiful images will make your eyes water without cold weather.
By Michael E. Bakich
How to observe comets
Nothing thrills skywatchers like a new comet, especially if it's bright. Follow these tips to be ready for the next one.
By Michael E. Bakich
Use this table to refine your comet observing.
By Michael E. Bakich
Celestron revives a classic scope
With the Omni XLT 127, Celestron has made its signature 5-inch scope even better.
By Raymond Shubinski
Departments
This Month in Astronomy
Astro Confidential
Letters
Web Talk
Bob Berman's Strange Universe
Glenn Chaple's Observing Basics
Astro News
The Sky this Month
Ask Astro
David H. Levy’s Evening Stars
Stephen James O'Meara's Secret Sky
New Products
The Cosmic Grid
Advertiser Index
Deep-sky Showcase
Reader Gallery
