Say "goodbye" to Jupiter and "hello" to Mars, as the midwinter evening skies come alive with activity. Learn to identify what stargazers call the Winter Hexagon, and much more. Host: S&T's Kelly Beatty. (3.9MB MP3 download: running time: 4m 8s)

Midwinter evening skies are alive with celestial activity — after sunset you'll find Jupiter in the southwest, and Orion, Mars, and much more over in the east.Host: S&T's Kelly Beatty. (5.9MB MP3 download: running time: 6m 27s)