2141–2160 of 2,187 results


Saturn Hides Another Star

On Tuesday November 25th, Saturn and its ring system glide in front of an 8.3-magnitude star in Gemini, the second time Saturn has occulted a star in 10 days.

Celestial Objects to Observe

Planetary Occultations for 2003

No matter where you live, there are plenty of chances to see an asteroid pass in front of a star this year.


Five Asteroids Meet

There’s a rare imaging challenge in Leo this month for amateurs with CCD-equipped telescopes.


Asteroid Aurora Occults a Star

On the night of September 24–25, minor planet 94 Aurora will pass directly in front of the 5th-magnitude star Chi Geminorum, blocking its light for up to 7 seconds.

Celestial News & Events

Moon Occults Mars

During the predawn hours of Thursday, July 17th, the waning gibbous Moon will cover Mars for skywatchers in southeastern Florida, the Caribbean, and parts of Central and South America.

Path of Vesta in 2003


Vesta in Virgo

During April, Vesta has many close encounters with members of the Virgo Galaxy Cluster.

Celestial Objects to Observe

Lunar Occultation Highlights for 2003

Dozens of times this year, no matter where you live, the Moon can be seen hiding bright stars in its path. Here's when and where you can watch the Moon occult these stars.

Celestial Objects to Observe

Dust Storm on Mars

A large regional dust storm has enveloped several thousand square kilometers of the red planet and shows no signs of abating.

Aurora on morning of Oct 29.

Celestial News & Events

Auroras Light Up the Sky

Many skywatchers who kept an aurora vigil during the morning hours of October 29, 2003, were richly rewarded by a spectacular display.

Aurora over Boston suburb

Celestial News & Events

Solar Flare Spawns More Aurora

For the second time in two nights, an explosion on the Sun triggered a widespread display of the northern lights, this time during the evening of October 30, 2003.


Crescent Moon Occults Venus

On Sunday evening, October 26th, Venus disappears behind the crescent Moon for observers in South America and Hawaii.

Celestial News & Events

Mars: The Show Continues

Mars will remain a fiery yellow-orange beacon in the evening sky during the first half of September and will shrink and fade only a little until well into October.

Solar System

Another Martian Dust Storm

Less than one month after a localized dust storm appeared on the Martian surface, another dust cloud has spring up.

Celestial Objects to Observe

Mercury Transits the Sun

When this innermost planet passes between the Earth and the Sun on May 7th, it will appear as a tiny black "sunspot" in small telescopes.

Asteroid 2002NY40

Celestial Objects to Observe

Catch Hermes on the Fly

Since 1937, Hermes has made eight unseen flybys past Earth. In late October, the asteroid will be 13th magnitude — bright enough to be seen in scopes 10-inches and larger.

Celestial Objects to Observe

Upcoming Asteroid Occultation

S&T illustration. A few minutes before 5:00 a.m. Eastern Standard Time on December 24th, the 170-kilometer-wide minor planet 334 Chicago passes in front of the 8.5-magnitude star SAO97327 in Gemini. The nominal path for this event crosses Philadelphia (at about 9:57 Universal Time) and continues westward across Lake Michigan, just…

Celestial Objects to Observe

Jupiter's Moon Dances

Every six years, for a few months at a time, Jupiter's satellites engage in a wonderful variety of alignments. They're starting up again.


An Observer's Guide to Mars

In 2001 the red planet swung closer to Earth than it had since 1988. It'll be even better in 2003. Here's an observer's guide from the 2001 opposition to whet your appetite for 2003.


Mercury Transit Tales

Mostly clear skies in Europe, the Far East, and Australia meant that many amateurs were able to view this rare event.

Celestial Objects to Observe

Viewing Mercury at Its Best

Fast-moving Mercury can be elusive. But spotting this sparkling little planet is easy if you know where and when to look.