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A "supermoon" is seen behind the Christ the Redeemer statue in Rio de Janeiro, Sunday, May 6, 2012. A supermoon is the coincidence of a full moon (or a new moon) with the closest approach the moon makes to the Earth. (AP Photo/Victor R. Caivano)

'Supermoon' lights up the sky

The largest full moon of 2013, a so-called "supermoon," will light up the night sky this weekend, but there's more to this lunar delight than meets the eye. On Sunday, June 23, at 7 a.m. EDT, the moon will arrive at perigee — the point in its orbit bringing it closest to Earth), a distance of 221,824 miles.

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