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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Above that, no cosmic rays at all were expected.
—
Big Think, 30 Jan. 2026
These winds, traveling at speeds 1,500 times the speed of sound here on Earth, carry gas, dust, metals, and cosmic rays far beyond the galaxy itself.
—Robert Lea, Space.com, 30 Jan. 2026
Impressively, the latest version of CosmicWatch is also being modified to measure primary cosmic rays aboard rockets and spacecraft.
—Chris Young, Interesting Engineering, 8 Jan. 2026
Quantum bits are inherently fragile and thus sensitive to all kinds of environmental factors, such as electric or magnetic fields, mechanical vibrations, or even cosmic rays.
—IEEE Spectrum, 23 Dec. 2025
See All Example Sentences for cosmic ray
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Big Think, 30 Jan. 2026
These winds, traveling at speeds 1,500 times the speed of sound here on Earth, carry gas, dust, metals, and cosmic rays far beyond the galaxy itself.
—Robert Lea, Space.com, 30 Jan. 2026
Impressively, the latest version of CosmicWatch is also being modified to measure primary cosmic rays aboard rockets and spacecraft.
—Chris Young, Interesting Engineering, 8 Jan. 2026
Quantum bits are inherently fragile and thus sensitive to all kinds of environmental factors, such as electric or magnetic fields, mechanical vibrations, or even cosmic rays.
—IEEE Spectrum, 23 Dec. 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 6 Feb. 2026.
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