Rise & Set

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Moon Question of the Day

On December 26, 1978, the Moon had a star resting on its tip. What was this called and how often ... More

Moon Folklore of the Day

Seeing a new moon through closed windows is unlucky. More

Sky Maps (Star Chart)

Get free, printable Sky Maps (Star Charts) to find your way around the night sky. View Sky Maps for this month.

Sky Watch

Each month, we highlight what’s happening in the skies—including bright planets, conjunctions, and meteor showers. Read Sky Watch

Eclipse Dates

See which eclipses will be visible across North America. See 2015 and 2016 Eclipse Dates.

Meteor Showers

Catch a star! See meteor showers dates for 2015 —plus viewing tips.

Tide Predictor

With the Tide Predictions Calculator, find high and low beach tides for any location in the U.S. and Canada for any date.