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Supermoon To Appear This Weekend

01/05/2012 14:05 BST | Updated 01/07/2012 10:12 BST

Skywatchers take note: The biggest full moon of the year is due to arrive this weekend.

The moon will officially become full Saturday (May 5) at 11:35 p.m. EDT. And because this month's full moon coincides with the moon's perigee -- its closest approach to Earth -- it will also be the year's biggest.