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 2008
Voyager 1
Interactions in Jupiter's vast magnetic field create sounds that will either shock you or have you whistling a tune.
By Richard Talcott // Published: November 12, 2007
Eyepieces
What's inside your favorite eyepiece? Here's a peek at eyepieces across the spectrum of today's technology.
By Glenn Chaple // Published: November 12, 2007
Point your telescope at another 10 celestial pairings.
By Michael E. Bakich // Published: November 12, 2007
Taurus
Explore these two star clusters near the border between Taurus and Orion.
By Phil Harrington // Published: November 12, 2007
McNaught from Argentina
Learn more about 2007's top space stories.
By Francis Reddy // Published: November 12, 2007
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