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 2012
01_Titan
The past year had a lot of important discoveries. Here are the ones that didn't quite make the top 10.
By Liz Kruesi // Published: November 28, 2011
Chemistry-WE

See examples of how the science of stuff works all around you.

By Bill Andrews // Published: November 28, 2011
Exoplanets
Learn about the likelihood of encountering habitable planets or other civilizations during an interstellar journey as well as phaser weaponry.
By Ayla Besemer // Published: November 28, 2011
QPE0761
Count down the Astronomy editor's favorite songs from Astronomy Editorial Advisory Board member Brian May's legendary rock group, Queen.
By David J. Eicher // Published: November 28, 2011
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