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.
October 2006
Park Forest, Cook County, Illinois
Published: October 16, 2006
Dense, self-gravitating clumps
Computer models help astronomers understand how planets form.
By Francis Reddy // Published: August 25, 2006
Exoplanet OGLE-2005-BLG-390Lb
Astronomers have found more than 200 planet candidates circling stars other than the Sun. Here's the scoop on the currently known planets.
By Richard Talcott // Published: August 25, 2006
Book icon
Discover this month's offerings of astronomy titles.
Published: August 25, 2006
IC 1470
One astroimager proves you can attain striking astroimages despite living under a light-polluted sky.
By Laura Layton // Published: August 25, 2006
Neptune
In this month's column, I promised we could find Neptune through binoculars in the October sky. Here's how.
By Phil Harrington // Published: August 25, 2006
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