Go outside and look up at the sky tonight at twilight. You?ll see a solar eclipse and the Sun will look like a crescent, caused by the moon passing in front of the Sun. Depending on where you live in North America, between 20% and 80% of the Sun will be covered. The partial eclipse will last about 2 hours.

Don?t look directly at the eclipse, as this could harm your eyes. Look through a lens with a solar filter or project an image of the Sun onto a screen through binoculars or a telescope (but don?t look directly through them). You can project the image on a piece of paper or anything else light colored.

Couch potatoes don?t even have to go outside to see it. Find a room with a west-facing window and close the blinds, leaving only a tiny crack open. The light coming through the small opening will cast an outline of the crescent onto the far wall.

If you live on the east coast, you won?t see much of the eclipse. In Miami, Washington D.C. and New York City, the eclipse begins and ends after nightfall. But almost everyone west of Atlanta can see some of it. Sky watchers in the south and central U.S. will have the best view.

To see a chart of when the eclipse will be occurring in your area, click here.

The ancient Mayans were the best skywatchers and calendar keepers of all time. Learn their secrets from Maurice Cotterell in ?The Tutunkhamun Prophecies?, click here.

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