Intergalactic Globulars
Astronomers have discovered "orphaned" globular star clusters wandering like vagabonds amid the members of a cluster of galaxies in Ursa Major.
Mars Meets the Moon
Although lunar occultations of Mars aren't rare, the red planet loomed large during the dramatic meeting on July 17th.
Small Asteroids = Small Threat?
Two researchers argue that stony asteroids fall apart much easier when they slam into Earth's atmosphere — and thus are far less destructive — than previously thought.
Comet Award Winners for 2003
Five individuals will share the fifth annual Edgar Wilson Award for amateur comet discovery.
The Oldest, Weirdest Planet
It orbits not just one star, but two. And it's almost as old as the universe itself.
More Martian Dust?
Growing Martian dust-storm clouds could mean the end observable surface features for sometime.
Keck Interferometer Measures a Future Solar System
In a technological tour de force, the two giant Keck telescopes combine light waves for super-sharp resolution of the disk around a young star.
Astro Image in the News: A Martian Potato
Courtesy NASA/JPL/Malin Space Science Systems. Since 1999 the Mars Global Surveyor spacecraft has been beaming high-resolution views of the red planet back to Earth. So many pictures have arrived in the past few years that it is easy to forget just how powerful the satellite's cameras really are. Thankfully, pictures…
Solar Activity Continues
A large spot is now visible on the Sun's surface. It's big enough to be seen without optical aid, but always use a safe solar filter when viewing the Sun.
Women in Professional Astronomy: Venus Rising
On June 29-30, astronomers met in Pasadena, California for the Women in Astronomy II meeting.
Arizona Scopes Escape Wildfire
Intense firefighting efforts have saved the many telescopes of Steward Observatory northeast of Tucson.
SOHO "Healthy" Despite Antenna Malfunction
The Solar and Heliospheric Observatory (SOHO) spacecraft's main antenna has malfunctioned — but the craft is still transmitting to Earth 80 percent of the time.
NASA To Launch Glowing Night Clouds
NASA will release three luminous clouds into the night sky over the Eastern Seaboard as early as tonight.
Delta Scorpii Still Showing Off
For the fourth summer in a row, a special star near Antares is shining abnormally bright.
All Eyes on Eta Carinae
Astronomers worldwide are observing around the clock right now to crack this superbright star's mysteries.
Nozomi (Finally) Heads for Mars
Japan's first-ever planetary spacecraft should reach Mars in mid-December &$151; but will it be functioning when it gets there?
News from the Sun
Solar astronomers meeting this week have announced a spate of new research results about our home star.
Aurora and Leviathan Highlight German Star Party
Patterned after the Stellafane convention in the US, the Internationales Teleskoptreffen Vogelsberg (ITV) drew a record crowd of more than 2,000 astronomy enthusiasts to Stumpertenrod, Germany.Photo by Guido Stein. One of the largest star parties of Europe, the International Telescope Meeting Vogelsberg (Internationales Teleskoptreffen Vogelsberg, or ITV) drew a huge…
A New Neighbor Star
Astronomers turn up a faint red dwarf just a few light-years from the solar system.
Sun Acts Up Again
Two large sunspot groups are visible on the Sun's face. One is flaring wildly, and the other looks like it's about to do the same.