Imagine the Universe!
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The Sun: Quiz

  1. Only the Sun's outermost layers can be viewed directly because



  2. The Solar Wind



  3. Sunspots



Imagine the Universe is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

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Acting Project Leader: Dr. Barbara Mattson
All material on this site has been created and updated between 1997-2012.

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