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 2004
HD38529 System
Profiles of four space artists
By Andrew Fazekas // Published: May 26, 2004
Hubble Deep Field
Read an Astronomy article first published in 1996 about the famous Hubble Deep Field.
Published: May 26, 2004
By Robert Burnham // Published: May 26, 2004
1835 lithograph
An 1835 newspaper account falsely heralded lunar observations by Sir John Herschel.
By Jeremy McGovern // Published: May 26, 2004
JIMO
NASA has started planning an ambitious mission to orbit Europa, Ganymede, and Callisto.
By Richard Talcott // Published: May 26, 2004
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