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Cosmicopia at NASA/GSFC -- Cosmic Rays
The term "cosmic rays" used to include [[X-rays]] and [[gamma rays]].
The term "cosmic rays" used to include [[X-rays]] and [[gamma rays]].
==External links==
*[http://helios.gsfc.nasa.gov/cosmic.html Cosmicopia at NASA/GSFC -- Cosmic Rays] by Beth Jacob