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 2011
La Voyage dans la lune
Join some of Astronomy’s editors on the very first cinematic space journey.
By Bill Andrews // Published: March 28, 2011
Impact-crater
Evidence of impacts is evident all over Earth’s surface.
By Liz Kruesi // Published: March 28, 2011
Gamma-Cygni-region
Our astrophotography series will have you becoming an accomplished imager in no time.
By Richard Talcott // Published: March 28, 2011
Crystal-Ball_Quattrocchi
By Michael E. Bakich // Published: March 28, 2011
Mammoth prominence
The Solar Dynamics Observatory is viewing the Sun’s magnetic field from its origin beneath the surface to the rarefied gas in the corona.
By Richard Talcott // Published: March 28, 2011
NGC4319 and Markarian 205
Point your telescope at more of these high-energy celestial wonders.
By Michael E. Bakich // Published: March 28, 2011
Hollywood
Space can provide a fun setting for any movie without actually mattering to the story.
By Bill Andrews // Published: March 28, 2011
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