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.
June 2006
The Planets
Discover this month's offerings of astronomy titles.
Published: April 21, 2006
James Webb Space Telescope
Despite budget problems, NASA and ESA continue with plans for a 6.5-meter space telescope designed to study the infant universe.
By Richard Talcott // Published: April 21, 2006
New Horizons
Planetary scientist Alan Stern fills us in on the possibility.
Published: April 21, 2006
Resources
Learn more about topics from the June 2006 issue.
Published: April 21, 2006
Spica
Although observations of Sirius get most of the attention, Virgo's bright star Spica may also have played a role in the art and lives of ancient Egyptians.
By Patricia Blackwell Gary, Richard Talcott // Published: April 21, 2006
Pluto and Charon
Explore the formation of Pluto's Charon and Earth's Moon with computer simulations.
By Francis Reddy // Published: April 21, 2006
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