Astronomy magazine's Sky Guide 2010
Bright planets, streaking meteors, and total eclipses of the Sun and Moon highlight an exceptional observing year.
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.
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.
Top 10 winter Milky Way treats
These must-see star clusters and nebulae look their best in this season's crisp air.
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.
Celestron revives a classic scope
With the Omni XLT 127, Celestron has made its signature 5-inch scope even better.
This Month in Astronomy
Bob Berman's Strange Universe
Glenn Chaple's Observing Basics
The Sky this Month
David H. Levy’s Evening Stars
Stephen James O'Meara's Secret Sky
The Christmas Cross: a matter of life and death
The Cosmic Grid
Look for this icon. This denotes premium subscriber content.
Learn more »