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 2005
Andrew Gould
The Ohio State astronomer discusses microlensing, stellar mass, and searching for answers.
By William Schomaker // Published: March 28, 2005
Bright star light
Hunting for irregular moons is a matter of stare-and-compare — whether done by eye or computer.
By Robert Burnham // Published: March 28, 2005
Sir Patrick Moore
Astronomy editors share their favorite books by Sir Patrick Moore.
Published: March 28, 2005
NGC 6397's collision course
Can a globular cluster create an open cluster? NGC 6397 may have done just that.
By Francis Reddy // Published: March 28, 2005
Buzz Aldrin
Apollo 11 Moon-walker Buzz Aldrin talks about the future of space flight.
By Richard Talcott // Published: March 28, 2005
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