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Complete Definition of "cosmic ray"

English
Noun
cosmic ray
wikipedia

  1. an energetic particle originating outside our solar system.
  2. cosmic radiation: a stream of cosmic rays

The use of the words "ray" and "radiation" implies incorrectly that cosmic rays are electromagnetic waves, similar to light rays and X-rays; cosmic rays were so named before their nature was known.

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Revision and Credits for"cosmic ray"
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