SUNSET: 
Sky at a Glance | May 28th, 2010
Watch Mars closing in on Regulus after dusk this week. The largest asteroid sails past the Lagoon Nebula. And one-belted Jupiter climbs up before dawn.
Sky at a Glance | May 14th, 2010
The crescent Moon joins Venus in the western twilight, just as Venus passes the horns of Taurus. The rings of Saturn have turned as thin as they'll become. And one-belted Jupiter is becoming higher and more prominent just before dawn.
Sky at a Glance | May 7th, 2010
The waning Moon passes Jupiter in the dawn, Venus passes between the horns of Taurus in evening twilight, and the rings of Saturn have turned as thin as they'll become.
S&T's Audio Sky Tour for May 2010
Right now the evening sky is adorned with three bright planets. Spotting them is a snap using this month's audio sky tour. Host: S&T's Kelly Beatty. (56.5MB MP3 download: running time: 5m 53s)
Tour May's Sky! | April 30th, 2010
Right now the evening sky is adorned with three bright planets. Spotting them is a snap using this month's audio sky tour.
Sky at a Glance | April 30th, 2010
The Moon passes Antares, Venus continues to creep upward in twilight, Orion says goodbye for the season, and the rings of Saturn, high in the south, have turned eerily thin.
Sky at a Glance | April 23rd, 2010
Venus, the Evening "Star" at nightfall, passes the Pleiades, Aldebaran and the Hyades this week. Mars continues to fade. And Saturn shines high, with its rings turned nearly edge on.
Sky at a Glance | April 16th, 2010
Watch the first-quarter Moon pass under Castor, Pollux, and Mars. Venus blazes low in the west in evening twilight. And before dawn, will the Lyrid meteors show up?
Sky at a Glance | April 9th, 2010
Mercury dwindles away from Venus in twilight, even as the crescent Moon comes to join them. And the tall line of Sirius, Procyon, and Mars is bending in the spring-evening warmth.
One Supernova, Many Camera Angles
"Light echoes" off dust clouds far from an old supernova are still providing replays of the explosion — as seen from different directions. They show that the explosion was asymmetric.
Sky at a Glance | April 2nd, 2010
Venus and Mercury are at the height of their twilight pairing in the western sky. For once, Mercury is showing itself really well!
Uranus and Neptune in 2010
Uranus and Neptune are easy to find with the aid of the charts in this article.
S&T's Audio Sky Tour for April 2010
If you've always wanted to spot Mercury, here's your chance. Find out where and when to look for the fleet-footed planet using this month's audio sky tour. Host: S&T's Kelly Beatty. (6.5MB MP3 download: running time: 6m 52s)
Tour April's Sky! | March 26th, 2010
If you've always wanted to spot Mercury, here's your chance. Find out where and when to look for the fleet-footed planet using this month's audio sky tour. Host: S&T's Kelly Beatty. (6.5MB MP3 download: running time: 6m 52s)
Sky at a Glance | March 26th, 2010
Venus and Mercury begin their lovely early-spring pairing low in the western sunset.
The Top 12 Naked-Eye Variable Stars
Lurking in the seemingly changeless constellations are a few inconstant stars that pulse and eclipse. Here are a dozen variables that are easy to observe.
Sky at a Glance | March 19th, 2010
The Moon pairs with the Pleiades and then runs under the arc of Castor, Pollux, and Mars this week. Saturn comes to opposition. And as spring begins, Sirius leaves the meridian behind.
Sky at a Glance | March 12th, 2010
The thin Moon passes Venus low in the west in bright twilight this week. And Mars remains shining near Castor and Pollux high overhead after dark.
Sky at a Glance | March 5th, 2010
This week Mars is as near as it will get to Castor and Pollux, high in the east after dark. Narrow-ringed Saturn rises soon after dark.
Zodiacal Light in the Evening
The zodiacal light is on its best display in the Northern Hemisphere on moonless evenings from February through April.
