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.
November 2008
55 Piscium
Fred Ringwald shares 20 more images shot with a webcam.
By Michael E. Bakich // Published: September 22, 2008
South America and Antarctica
Former Senior Editor Francis Reddy describes how an observer on the Red Planet can see Earth cross the face of the Sun.
Published: September 22, 2008
Cassiopeia finder chart
These star groups will enhance your appreciation of the Queen's astronomical riches.
By Phil Harrington // Published: September 22, 2008
Hot exoplanet
Astronomy Contributing Editor Ray Jayawardhana explains how astronomers hunt for worlds beyond our own.
By Richard Talcott // Published: September 22, 2008
Millbillillie meteorite
How can you tell a real meteorite from ordinary rocks?
By Daniel Pendick // Published: September 22, 2008
Lunar gateway
Here's how to transport a large space telescope far into space using virtually no fuel.
By Daniel Pendick // Published: September 22, 2008
Hinrich Bäsemann
More spectacular examples of Hinrich Bäsemann's auroral photography.
By Daniel Pendick // Published: September 22, 2008
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