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2010-10-17 10:50:51

Twice a year, Solar Week provides a weeklong series of web-based educational activities for classrooms about our magnetic variable star, the sun, and its interactions with Earth and the solar system.


Word of the Day
cassation
  • The abrogation of a law by a higher authority; annulment.
  • In music, during the eighteenth century, a song or an instrumental piece similar to the serenade, intended for performance in the open air.
The word 'cassation' comes from the French 'cassation', from Latin 'casso' ("destroy, annul").
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