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    Physics & Astronomy
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    Century Astronomy
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    Exam 21: The Milky Waya Normal Spiral Galaxy
  5. Question
    Cosmic Rays Come Mostly from Extragalactic Sources and Contribute Little
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Cosmic Rays Come Mostly from Extragalactic Sources and Contribute Little

Question 87

Question 87

True/False

Cosmic rays come mostly from extragalactic sources and contribute little to the overall energy balance in the Milky Way disk.

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