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.
April 2005
Blue Saturn
See the images returned from Cassini as it makes its way around Saturn.
Published: February 22, 2005
Milky Way
Although they may appear to be minor constituents of the local universe, low-surface-brightness galaxies rule in sheer number.
By Richard Talcott // Published: February 22, 2005
Steven Beckwith
Steven Beckwith talks about the Hubble Space Telescope's greatest success — and its greatest challenge.
By Francis Reddy // Published: February 22, 2005
Two microfossils
Looking for life's origins takes scientists back to the oldest rocks on Earth.
By Robert Burnham // Published: February 22, 2005
Flame Nebula
Digital imaging is fast overtaking film in the world of amateur astronomy, but the old dog still barks.
Published: February 22, 2005
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