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 2005
Espenek map
When will you next be able to see the Moon block the Sun?
By Liz Kruesi // Published: May 24, 2005
Book icon
Learn more about topics from the July 2005 issue.
Published: May 24, 2005
Cat’s Eye Nebula
Challenge yourself with these tough telescopic targets.
By Ian Ridpath // Published: May 24, 2005
Comet Hale-Bopp, April 9, 1997
Here's a collection of Comet Hale-Bopp images that Astronomy received in 1997.
Published: May 24, 2005
Moon count
In 1610, Galileo Galilei discovered the first moons belonging to another planet. Since then astronomers have added a few.
By Robert Burnham // Published: May 24, 2005
Panta Rhei music
Learn more about Alex Szalay's progressive rock band, Panta Rhei.
By Liz Kruesi // Published: May 24, 2005
m80 globular cluster
Here are additional deep-sky targets from the July 2005 column.
By Phil Harrington // Published: May 24, 2005
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