Question

what is cosmic ray ???????​

Answer 1

Explanation:

a highly energetic atomic nucleus or other particle travelling through space at a speed approaching that of light.

Answer 2

Answer:

Showers of high energy particles occur when energetic cosmic rays strike the top of the Earth's atmosphere. Most cosmic rays are atomic nuclei: most are hydrogen nuclei, some are helium nuclei, and the rest heavier elements. Although many of the low energy cosmic rays come from our Sun, the origins of the highest energy cosmic rays remains unknown and a topic of much research. This drawing illustrates air showers from very high energy cosmic rays.

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