Meaning Of The Word Cosmic rays

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Cosmic rays Meaning

Cosmic rays Definition
Cosmic rays Definition

What's The Definition Of Cosmic rays?

cosmic rays
plural noun: Cosmic rays are rays that reach Earth from outer space and consist of atomic nuclei.

cosmic rays in American English
streams of high-energy charged particles from outer space, composed of protons, alpha particles, and a few heavier nuclei, which bombard the atoms in the upper atmosphere and produce various secondary nuclear particles which shower the earth

cosmic rays in British English
plural noun: radiation consisting of particles, esp protons, of very high energy that reach the earth from outer space

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