81–100 of 157 results

Pro-Am Collaboration

Asteroid To Hide Naked-Eye Star

For anyone in a 25-mile-wide path right across Los Angeles, a bright star in Ophiuchus will wink off for several seconds in the predawn hours of April 6, 2010.

Pro-Am Collaboration

New Comet Machholz

California's comet-hunting veteran Don Machholz bagged his 11th discovery on March 23 and 26, 2010. It's a faint diffuse comet, low in the morning sky.

Pro-Am Collaboration

Nova in Eridanus

Japanese amateur Koichi Itagaki, of recent comet fame, has just discovered a nova near Rigel on November 25, 2009.

Citizen Science: Projects & Collaboration

Citizen Sky Wants You!

Backyard astronomers of all types and experience levels can participate in a real-world science project — and help solve a mystery involving the star Epsilon Aurigae that's puzzled astronomers since 1821.

Mario Motta

Save Dark Skies

U.S. Physicians Join Light-Pollution Fight

Thanks to a full-court press by a cardiologist with a passion for astronomy, the American Medical Association has taken a stance in the fight to make outdoor lighting more benign to humans — and to the stars above.

Pro-Am Collaboration

New York Teen Finds Wimpiest Supernova

On November 7, 2008, 14-year-old Caroline Moore of Warwick, New York, discovered a supernova in the galaxy UGC 12682, making her the youngest person ever to find an exploding star.

Pro-Am Collaboration

New Circumpolar Comet Yi-SWAN

On March 26, 2009, Korean amateur Dae-am Yi caught the small, greenish glow of a new comet with his Canon camera.

Pro-Am Collaboration

Asteroid to Occult Star on Morning of Friday, Jan. 9

On the morning of Friday, Jan. 9, from 10:55 to 11:06 UT, asteroid 1963 Bezovec occults the 8.3-magnitude star HIP 64220 in a narrow path from Baja California through Texas to New England and Nova Scotia.

Pro-Am Collaboration

Rare Eclipse of EE Cephei Is Set to Begin

During January 2009 a faint star in Cepheus will fade, as it does every five or six years, when "something" goes in front of it.

Save Dark Skies

Rate Your Skyglow

Light pollution is most amateur astronomers' worst enemy. Learn here how to measure and describe how brightly your sky glows.

Pro-Am Collaboration

Rock from Space to Burn Up over Africa

Late Monday night, October 6-7, 2008, a tiny asteroid will enter Earth's atmosphere over Sudan, creating a spectacular explosion in the night sky.

Pro-Am Collaboration

Possible Fireball Outburst Sept 9-10

An unexpected meteor burst was detected on the night of September 8-9. Bill Cooke of the Marshall Space Flight Center is urging meteor watchers to see if the activity continues on the night of September 9-10.

Pro-Am Collaboration

Perseids Hitting the Moon

Amateurs have helped lead the way in recording the flashes of meteoroids hitting the Moon's night side.

Pro-Am Collaboration

Jupiter's Third Red Spot May Have Survived

Jupiter's newest red spot was disrupted during its encounter with the Great Red Spot and Oval BA, but appears to be reforming.

Pro-Am Collaboration

Comet Boattini Brightens

During May and June 2008, this visitor may be dimly visible without a telescope — but only if you live in the Southern Hemisphere.

Pro-Am Collaboration

Another Bright Nova, This Time in Sagittarius

Just magnitude 9 when discovered on April 18, 2008, this nova in Sagittarius has brightened tenfold.

Pro-Am Collaboration

Found in Cygnus: A 7th-Magnitude Nova

Two Japanese amateurs captured the new star on April 10, 2008, at a spot where their camera had recorded nothing just three days earlier.

Pro-Am Collaboration

A Triple Occultation by Eugenia and Its Moons

On March 8, 2008, this asteroid or one of its two moons could make a faint naked-eye star vanish briefly from the sky.

Pro-Am Collaboration

S&T's Star-count Challenge!

How bad is the light pollution where you live? How many stars can you see on a dark night? Last year the GLOBE at Night project tallied 8,500 star-counting estimates from around the world. That's great — but we can do better! All it'll take is 30 minutes and a clear evening between now and March 8th.

Pro-Am Collaboration

Possible Occultation by Varuna Sunday Night

A huge, remote asteroid could briefly blot out a faint star in Gemini on February 10-11, 2008.