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Your online destination for news articles on planets, cosmology, NASA, space missions, and more. You’ll also find information on how to observe upcoming visible sky events such as meteor showers, solar and lunar eclipses, key planetary appearances, comets, and asteroids.
 | High-resolution images from the Mars Express spacecraft reveal the planet's largest volcanoes may have seen activity — volcanic and glacial — in the past few million years. By Robert Burnham
Published: December 29, 2004 |
 | ET ready to ship, feeling the Sun, big step for a giant scope, and more
Published: December 28, 2004 |
 | An asteroid briefly developed into the most serious impact threat cataloged to date. By Bill Cooke
Published: December 27, 2004 |
 | The Cassini spacecraft successfully deploys Huygens, a probe destined to answer astronomers' questions about Saturn's haze-shrouded and enigmatic moon Titan. By Richard Talcott
Published: December 24, 2004 |
 | Massive yet compact galaxies discovered relatively near the Milky Way belong to a type believed extinct since the early history of the universe. By Robert Burnham
Published: December 22, 2004 |
 | The Cassini spacecraft took a close look at Saturn's moons Titan and Dione this past week and found some surprises.
By Richard Talcott
Published: December 21, 2004 |
 | The world's largest airborne observatory prepares to take wing. By Martin Ratcliffe
Published: December 21, 2004 |
 | This astronomical event is one nobody looks forward to. By Michael E. Bakich
Published: December 20, 2004 |
 | The biggest star-forming region in the local universe, the Tarantula Nebula also ranks among the most stunning sights. By Richard Talcott
Published: December 16, 2004 |
 | Sean O'Keefe, the embattled head of the U.S. space agency, resigns. By Michael E. Bakich
Published: December 14, 2004 |
 | Two space telescopes capture evolving planetary systems. By Michael E. Bakich
Published: December 10, 2004 |
 | A young Moon will not interfere with the 2004 Geminid meteor shower.
The Astronomy staff
Published: December 10, 2004 |
 | Astronomers have found a dim red star in the Sun's backyard. By Ken Croswell
Published: December 10, 2004 |
 | Quaoar, an icy minor planet in the Kuiper Belt with half the size of Pluto, shows a surprisingly young face hinting at volcanic activity. By Robert Burnham
Published: December 9, 2004 |
 | A new analysis of the cosmic microwave background suggests the solar system may be distorting our view of it. By Dan Falk
Published: December 8, 2004 |
 | NASA says the shuttle will likely return to flight in May 2005, but it may launch without a proven capability to fix damaged tiles while in orbit. By Robert Burnham
Published: December 7, 2004 |
 | Stand back CSI, the astronomers of CfA may have solved a mystery of cosmic proportions. By Matthew Quandt
Published: December 2, 2004 |
 | On December 7, observers in parts of North America can witness the Moon passing in front of Jupiter. By Jeremy McGovern
Published: December 2, 2004 |
 | Astronomers may have discovered the universe's youngest known galaxy. By Jeremy McGovern
Published: December 1, 2004 |
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