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.
July 2012
02_M24
Give your telescope a night off and target these wonders through binoculars.
By Phil Harrington // Published: May 29, 2012
sn1987a
Not all supernovae are created equal. Here is a brief description of the four main categories of exploding stars.
By Liz Kruesi // Published: May 29, 2012
Cape-York_AMNH
Collectors have recovered meteorites everywhere from Greenland to Antarctica.
By Karri Ferron // Published: May 29, 2012
Tziolas
An ongoing scientific study takes on one of mankind's longest and most difficult dreams.
By Bill Andrews // Published: May 29, 2012
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