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

PANSTARRS information

Comet C/2012 S1 (ISON)

ISON information

Web Extras
Go deeper into the stories of Astronomy magazine. These online features bring you additional research, interviews, photos, and more our editors turned up while creating the stories for this issue.
March 2011
Moon_011811
Our next-door neighbor began to reveal many of its secrets 4 decades ago when astronauts first ventured beyond the control of Earth’s gravity.
By Richard Talcott // Published: January 24, 2011
Rich-star-clusters
With a simple camera-on-tripod setup, you’ll be taking great astrophotos in no time.
By Richard Talcott // Published: January 24, 2011
IMG_3529_Barnard06
Browse more than 50 images from the life and times of Edward Emerson Barnard.
By David J. Eicher // Published: January 24, 2011
Crab-nebula
Even though its eccentricities make M1 a worthwhile target, there’s plenty of other “exploded stars” out there to observe.
By Bill Andrews // Published: January 24, 2011
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