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.
May 2012
The-Hub
The Baker Street Irregular Astronomers astronomical society in London, England, shares its “Holmes Catalog.”
By Simon Bennett // Published: March 26, 2012
0512_path-of-annularity
While some of the world will experience a ring of annularity May 20/21, many more can witness the Moon take a partial bite out of the Sun’s disk that day.
By Richard Talcott // Published: March 26, 2012
Open-cluster-M48

All you need to enjoy these gems is a dark sky and two eyes.

By Phil Harrington // Published: March 26, 2012
01_Denver-airport
Astronomy isn’t just about pretty things in space. Research in this field has helped society in countless ways.
By Liz Kruesi // Published: March 26, 2012
Seth-Shostak
Watch various scientists discuss their work and its applications to the search for extraterrestrial intelligence.
By Bill Andrews // Published: March 26, 2012
SEARCH SITE
Subscriber Only Access
Subscriber Only Content
Look for this icon. This denotes premium subscriber content. Learn more »
Become a Member of Astronomy.com
Register today for access to more valuable resource information.
Interact in our forums, comment on articles, receive our newsletter and much more!
Not a member?
Subscriber and Member Login
Password
Remember me