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 2011
01_M45_Block
Enjoy more images of winter binocular objects.


By Liz Kruesi // Published: November 19, 2010
NGC7000
Off-the-shelf digital cameras can deliver splendid shots of the night sky.

By Richard Talcott // Published: November 19, 2010
Voyager-spacecraft
Return to a time when little was known about the outer planets and everyone looked forward to Voyager’s discoveries.

By Bill Andrews // Published: November 19, 2010
SQ_Hallas
This galaxy group is stunning in photographs.
By Liz Kruesi // Published: November 19, 2010
Great-comet
The 19th-century artist’s illustrations reveal not just some of the sky’s more famous objects, but also the attitudes toward them on Earth.

By Bill Andrews // Published: November 19, 2010
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