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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The upper layer of Bennu's surface has been exposed to cosmic rays for 2 million to 7 million years, the study reports.
—
Sharmila Kuthunur, Space.com, 2 Sep. 2025
For more than a century, scientists have known that Earth is constantly bombarded by cosmic rays, charged particles with staggering energies, far beyond what our accelerators can produce.
—Rupendra Brahambhatt, Interesting Engineering, 24 Aug. 2025
Life on these worlds would have to lurk underground for reasons other than thirst alone because their surface is scarcely shielded by an atmosphere and constantly bombarded with lethal cosmic rays.
—Emma R. Hasson, Scientific American, 17 Aug. 2025
These codes, baked into nearly every digital system, are designed to detect and repair any errors that noise, interference or cosmic rays might inflict.
—Quanta Magazine, 7 Aug. 2025
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Sharmila Kuthunur, Space.com, 2 Sep. 2025
For more than a century, scientists have known that Earth is constantly bombarded by cosmic rays, charged particles with staggering energies, far beyond what our accelerators can produce.
—Rupendra Brahambhatt, Interesting Engineering, 24 Aug. 2025
Life on these worlds would have to lurk underground for reasons other than thirst alone because their surface is scarcely shielded by an atmosphere and constantly bombarded with lethal cosmic rays.
—Emma R. Hasson, Scientific American, 17 Aug. 2025
These codes, baked into nearly every digital system, are designed to detect and repair any errors that noise, interference or cosmic rays might inflict.
—Quanta Magazine, 7 Aug. 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 8 Sep. 2025.
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