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.
December 2007
Mount Pinos
Amateur astronomers across the country shared these images with us of their favorite places to observe the stars.
By Daniel Pendick // Published: October 22, 2007
winter wonderland
Getting the Large Binocular Telescope to "first light" required top engineering - and a little luck.
By Bruce Dorminey // Published: October 22, 2007
WMAP view of the cosmic microwave background
Two space telescopes, the Cosmic Background Explorer (COBE) and the Wilkinson Microwave Anisotropy Probe (WMAP), revealed the beginnings of today's universe and forever changed cosmology.
By Daniel Pendick // Published: October 22, 2007
Mars (October 15, 2005)
Here are more ways you can make the most of your telescope time.
By Michael E. Bakich // Published: October 22, 2007
M45
After you tour the Pleiades in the December issue, check out these M45 fun facts, introduction to binoculars, and a December observing assignment.
By Phil Harrington // Published: October 22, 2007
Jupiter-size planet
Exploring one of Earth's nearest stars may reveal a planetary system where the seeds of life may already be growing.
By Ray Villard // Published: October 21, 2007
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