SUNSET: 
This Week's Sky at a Glance, April 29 – May 7
The last-quarter Moon shines above Capricornus before dawn's first light. These evenings, the long, dim sea serpent Hydra snakes across the southern sky.
This Week's Sky at a Glance, April 22 – 30
As night descends, look high in the west for Pollux and Castor - the heads of the almost-upright Gemini twins form the top of the Arch of Spring asterism.
This Week's Sky at a Glance, April 15 – 23
Comet 252P/LINEAR is crossing Ophiuchus very high before the first light of dawn. The Moon Friday evening forms a gently curving row with Regulus and Jupiter.
This Week's Sky at a Glance, April 8 – 16
Looking west in twilight, use the thin crescent Moon as your guidepost to Mercury. And have you tried yet for Comet 252P/LINEAR?
This Week's Sky at a Glance, April 1 – 9
Spring is here! Which means Arcturus shines brightly in the east. The Big Dipper, high in the northeast, points its handle toward it.
This Week's Sky at a Glance, March 25 – April 2
By 11 p.m., the bowl of the Big Dipper stands upside down over the bowl of the dim Little Dipper, as if dumping water into it.
This Week's Sky at a Glance, March 18 – 26
As winter turns to spring, Orion declines in the southwest after dark with his Belt roughly horizontal. Equinox on Saturday.
This Week's Sky at a Glance, March 11 – 19
Just after dark Friday, look for the waxing crescent Moon low in the west. Upper right of the Moon by about 14° are the leading stars of Aries.
This Week's Sky at a Glance, March 4 – 12
Leo stands over bright Jupiter at nightfall this week. The Big Dipper glitters high in the northeast and Sirius blazes due south.
This Week's Sky at a Glance, February 26 – March 5
After dinnertime this time of year, four carnivore constellations stand in a row from the northeast to south: Ursa Major, Leo, Hydra, and Canis Major.
This Week's Sky at a Glance, February 19 – 27
On Friday the waxing gibbous Moon shines below Castor and Pollux. On Tuesday the just-past-full Moon shines with Jupiter after they both rise at end of twilight.
This Week's Sky at a Glance, February 12 – 20
The biggest well-known star pattern is the Winter Hexagon, marked by the stars Sirius, Procyon, Pollux, Castor, Beta Aurigae, Capella, Aldebaran, and Rigel.
This Week's Sky at a Glance, February 5 – 13
See all five naked-eye planets at dawn, though Mercury is getting low. On Saturday morning, the crescent Moon, Venus, and Mercury form a triangle low in the southeast.
This Week's Sky at a Glance, January 29 – February 6
The last-quarter Moon rises around 1 a.m. Sunday night, in company with Mars. By the dawn of Monday the 1st they're high in the south.
This Week's Sky at a Glance, January 22 – 30
See all five planets at dawn! The nearly-full Moon shines in Gemini Friday evening — with Castor and Pollux to its left and Procyon to its lower right.
This Week's Sky at a Glance, January 15 – 23
The Moon shines in dim Pisces upper left of the Great Square of Pegasus. Does the half-lit Moon look just a trace bigger than usual? It's about at perigee.
This Week's Sky at a Glance, January 8 – 16
Comet Catalina (C/2013 US10) is fading but still within view. A special treat on January 9th: Venus and Saturn just half a degree from each other.
This Week's Sky at a Glance, January 1 – 9
Comet Catalina (C/2013 US10) remains visible very high in the southeast before the first light of dawn. For more to see, look to Orion in prime view.
This Week's Sky at a Glance, December 25 – January 2
The Christmas Moon, a day past full, hangs in Gemini. Look for Castor and Pollux to its left. High above shines the constellation Auriga.
This Week's Sky at a Glance, December 18 – 27
Friday evening, the first-quarter Moon shines under the left side of the Great Square of Pegasus. Can you see the Moon moving with respect to this line as the hours go by?
