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 2009
July 2009 dying star movie
Astronomers have long known that planets form in dusty disks around newborn stars. Now, researchers suspect that planets also can develop in debris disks surrounding exploded stars.
By Richard Talcott // Published: May 26, 2009
Barren pole
Associate Editor Daniel Pendick addresses the subject of Moon illusion and possible explanations for it.
Published: May 26, 2009
Neil deGrasse-Tyson
Learn more about the lives and ideas of Neil deGrasse Tyson and Michelle Thaller.
By Karri Ferron // Published: May 26, 2009
NGC 7008
Scope out this constellation's dozens of dying stars.
By Phil Harrington // Published: May 26, 2009
OGLE telescope
A new generation of intelligent robotic telescopes search for planets in other solar systems.
By Daniel Pendick // Published: May 26, 2009
Sharpless 2-126
Spend some time with another dozen celestial wonders.
By Michael E. Bakich // Published: May 26, 2009
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