cosmic ray
noun
: a stream of atomic nuclei of extremely penetrating character that enter the earth's atmosphere from outer space at speeds approaching that of light
Examples of cosmic ray in a Sentence
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Beneath the surface of these planetary bodies, there’s a chance that biological activity is being energized by cosmic rays flowing through space.
—
Jack Knudson, Discover Magazine, 29 July 2025
The quartet began as astronauts, who were forever changed when dosed with cosmic rays on their journey to space.
—Kambole Campbell, Vulture, 28 July 2025
Simply put, cosmic rays are high-energy particles from space that travel at nearly the speed of light.
—Robert Lea, Space.com, 25 July 2025
In this couple’s case, however, the discovery adds an understandable anxiety other parents needn’t worry about: What effect will that fateful exposure to cosmic rays, which gave the Fantastic Four their powers, have on their unborn child?
—Peter Debruge, Variety, 22 July 2025
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Jack Knudson, Discover Magazine, 29 July 2025
The quartet began as astronauts, who were forever changed when dosed with cosmic rays on their journey to space.
—Kambole Campbell, Vulture, 28 July 2025
Simply put, cosmic rays are high-energy particles from space that travel at nearly the speed of light.
—Robert Lea, Space.com, 25 July 2025
In this couple’s case, however, the discovery adds an understandable anxiety other parents needn’t worry about: What effect will that fateful exposure to cosmic rays, which gave the Fantastic Four their powers, have on their unborn child?
—Peter Debruge, Variety, 22 July 2025
See All Example Sentences for cosmic ray
Cite this Entry
“Cosmic ray.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cosmic%20ray. Accessed 25 Aug. 2025.
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