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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Scientists are now especially interested in how these structures evolve, fragment or interact with other molecules under the influence of ultraviolet light, cosmic rays and shocks in interstellar space.
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Victoria Corless, Space.com, 30 June 2025
The Auger Observatory is a hybrid detector that uses two methods to find and study cosmic rays.
—Ashley Strickland, CNN Money, 20 June 2025
In a new study, researchers from the Los Alamos National Laboratory in New Mexico argue that this spark is often provided by cosmic ray showers.
—Gabe Whisnant, MSNBC Newsweek, 24 June 2025
In past studies, researchers tried to explain the hydrogen ionization through cosmic rays — fast, energetic particles that move through the Universe.
—Monica Cull, Discover Magazine, 11 Mar. 2025
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Victoria Corless, Space.com, 30 June 2025
The Auger Observatory is a hybrid detector that uses two methods to find and study cosmic rays.
—Ashley Strickland, CNN Money, 20 June 2025
In a new study, researchers from the Los Alamos National Laboratory in New Mexico argue that this spark is often provided by cosmic ray showers.
—Gabe Whisnant, MSNBC Newsweek, 24 June 2025
In past studies, researchers tried to explain the hydrogen ionization through cosmic rays — fast, energetic particles that move through the Universe.
—Monica Cull, Discover Magazine, 11 Mar. 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 20 Jul. 2025.
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