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.
December 2003
Watch an Iridium flare to see for yourself what the great supernova of 1006 looked like.
By Francis Reddy // Published: December 23, 2003
Danish astronomer Tycho Brahe lived a rather interesting life.
By Maggie McKee // Published: September 30, 2003
Amateur astronomers have found a new tool for imaging the sky.
By Michael E. Bakich // Published: September 30, 2003
Physicists have built many instruments to detect neutrinos. Maybe all those Nobel Prizes won by previous neutrino researchers have something to do with it.
By Robert Burnham // Published: September 30, 2003
Book icon
Avid book collector and Astronomy magazine senior editor Robert Burnham lists a few of his favorite books.
By Robert Burnham // Published: September 30, 2003
Murchison Meteorite Sample
Robert Haag is one of the most well-known meteorite dealers in the world.
By Raymond Shubinski // Published: September 30, 2003
Copernicus
The Hubble Space Telescope's Wide Field and Planetary Camera 2 has brought the world stunning views of the cosmos.
By Richard Talcott // Published: September 30, 2003
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