What's an annular eclipse?

POSTED: 01:32 PM PDT May 20, 2012    UPDATED: 02:16 PM PDT May 20, 2012 

You may be ready to see Sunday's annular eclipse, but do you know how it's different from any other eclipse? Learn more about this rare event.

Annular Solar Eclipse
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Donald Chan/Reuters

You may be ready to see Sunday's annular eclipse, but do you know how it's different from any other eclipse? Learn more about this rare event with information from NASA and Space.com.

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