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.
January 2006
Jack Horkheimer
Despite his lifetime bout with a chronic illness, Jack Horkheimer refuses to do anything but "keep lookin' up."
By William Schomaker // Published: November 28, 2005
Snake Nebula
Take a tour of the Milky Way's barren areas.
By Michael E. Bakich // Published: November 28, 2005
Resources
Learn more about topics from the January 2006 issue.
Published: November 28, 2005
Hydrogen's fingerprints
When it comes to characterizing stars, physics and astronomy intertwine.
By Liz Kruesi // Published: November 28, 2005
Simulated Saturn at its 2006 opposition
Whether you're imaging, drawing, or just sharing Saturn with others, the ringed planet has something for everyone.
By Francis Reddy // Published: November 28, 2005
Perseus
In addition to the objects mentioned in this month's magazine column, don't miss the following objects in Perseus.
By Phil Harrington // Published: November 28, 2005
Tracking Kapteyn's Star
Two men with different backgrounds worked together to discover this speedy star.
By Liz Kruesi // Published: November 28, 2005
Titan: Huygens DISR close-up
Huygens landed and Deep Impact crashed, but scientists are still learning from both events.
By Francis Reddy // Published: November 28, 2005
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