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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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.
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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
Neutrinos could help astronomers better understand cosmic rays and what launches them across the cosmos.
—Ashley Strickland, CNN Money, 20 June 2025
The fact that such vast haloes aren't usually seen at this radio frequency suggests to the team the presence of cosmic ray electrons and magnetic fields stretched out to the edge of clusters like this one.
—Robert Lea, Space.com, 17 June 2025
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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
Neutrinos could help astronomers better understand cosmic rays and what launches them across the cosmos.
—Ashley Strickland, CNN Money, 20 June 2025
The fact that such vast haloes aren't usually seen at this radio frequency suggests to the team the presence of cosmic ray electrons and magnetic fields stretched out to the edge of clusters like this one.
—Robert Lea, Space.com, 17 June 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 15 Jul. 2025.
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