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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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
Everything from your connection with siblings to your thoughts and conversations will be under Jupiter’s blessed and cosmic rays.
—Valerie Mesa, People.com, 9 June 2025
The constant interactions between cosmic rays and CMB photons slows the cosmic ray, limiting their kinetic energy.
—Keith Cooper, Space.com, 16 May 2025
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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
Everything from your connection with siblings to your thoughts and conversations will be under Jupiter’s blessed and cosmic rays.
—Valerie Mesa, People.com, 9 June 2025
The constant interactions between cosmic rays and CMB photons slows the cosmic ray, limiting their kinetic energy.
—Keith Cooper, Space.com, 16 May 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 2 Jul. 2025.
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