SUNSET: 
Tour October's Sky! | August 27th, 2012
Mars is managing to hang on low in the west after sunset, while in the east you'll see the Square of Pegasus and, later on, the giant planet Jupiter.
Where Does the Phrase "Once in a Blue Moon" Come From?
We'll see a "blue Moon" next Friday, but what does that mean? From the Middle Ages to the game of Trivial Pursuit, a folklorist explores the origin of the phrase.
Sky at a Glance | August 24th, 2012
As August comes to its end, Vega takes the zenith. The Teapot is highest in the south. And the Little Dipper dumps into the Big Dipper.
Sky at a Glance | August 10th, 2012
Mars finally shoots the gap between Saturn and Spica in the western twilight. And don't miss the Perseid meteors!
Sky at a Glance | August 3rd, 2012
Mars moves closer each day to Saturn and Spica as twilight fades. After dark, bright Vega passes the zenith.
Sky at a Glance | July 27th, 2012
In twilight this week, watch the shrinking triangle of Saturn, Spica, and Mars. And the bright summer Moon moves low through Scorpius and Sagittarius.
S&T's Audio Sky Tour for September 2012
Some of this month's sky sights are low down along the horizon: Saturn and Mars in the west after sunset, the first-quarter Moon in the south, and Jupiter when it rises around midnight in the east.
Sky at a Glance | July 20th, 2012
Mars is closing in on Saturn and Spica at dusk, as the waxing Moon passes by them this week.
Sky at a Glance | July 13th, 2012
Mars continues to advance toward Saturn and Spica in the evening sky. And Jupiter and Venus shine higher in the dawn.
Sky at a Glance | July 6th, 2012
Mars speeds toward Saturn and Spica in the evening sky. Jupiter and Venus rise into prominence in the dawn.
Sky at a Glance | June 29th, 2012
The Moon waxes to full in the evening sky, passing Scorpius on the way. And Venus and Jupiter get together again like last March — but this time in the dawn.
S&T's Audio Sky Tour for August 2012
Mark your calendars for the night of Saturday, August 11th, when the Perseid meteor shower will peak. Stay up late to catch the risings of Jupiter and Venus, or just enjoy Mars and Saturn low in the evening twilight.
Tour August's Sky! | June 22nd, 2012
Mark your calendars for the night of Saturday, August 11th, when the Perseid meteor shower will peak. Stay up late to catch the risings of Jupiter and Venus, or just enjoy Mars and Saturn low in the evening twilight.
Sky at a Glance | June 22nd, 2012
The waxing Moon passes Mars and Saturn, the Dolphin and the Teapot are coming into evening view, and Venus and Jupiter grow bolder about showing themselves at dawn.
Sky at a Glance | June 15th, 2012
The Summer Triangle climbs higher this week, the temporary summer triangle of 2012 sinks lower, and Venus and Jupiter begin showing themselves better at dawn.
Sky at a Glance | June 8th, 2012
The Big Dipper hangs bowl down. The Saturn-Spica pair shines high in the south at dusk. And now that Venus has departed from the Sun, it's joining Jupiter deep in the glow of dawn. On what morning will you first see them both?
Sky at a Glance | June 1st, 2012
The transit of Venus gets the big attention this week -- but do you know about the partial eclipse of the Moon one day earlier?
Transits of Venus in History: 1631-1716
Read the full account — in three parts — of the history behind the upcoming transit of Venus.
S&T's Audio Sky Tour for July 2012
This month, you can see a pair of planets before sunrise and another pair after sunset. In each case, one of them is situated near a bright star.
Tour July's Sky! | May 30th, 2012
This month, you can see a pair of planets before sunrise and another pair after sunset. In each case, one of them is situated near a bright star.
