With Santa getting ready to make his annual trek down from the North Pole, you'll want be watching for him — and that means knowing where to find Polaris, the North Star. You can find it easily using this fun and informative guided tour of the evening sky.

December features a special treat soon after sunset, with Venus and Jupiter snuggling just 2° apart and a thin crescent Moon hovering nearby.

The celestial landscape also features the unmistakable "M" of Cassiopeia high in the north, pointing down toward Polaris.

Looking farther east, you'll learn to spot the Pleiades star cluster, which gets briefly covered by the Moon this month.

Get all these details and more by downloading December's audio sky tour. It's a 5-megabyte MP3 file that runs 5m 47s.