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 space agency said Wednesday an instrument on Voyager 2 that measures charged particles and cosmic rays will shut off later this month.
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Compiled By Democrat-Gazette Staff From Wire Reports, arkansasonline.com, 6 Mar. 2025
The Threat of Cosmic Radiation Earth’s magnetic field acts as a shield, largely protecting us from high-energy radiation from the Sun and galactic cosmic rays.
—Jake Parks, Discover Magazine, 1 Mar. 2025
Supernovae Explained Stardust comes from supernovae, powerful stellar explosions that release vast amounts of energy and cosmic rays into space.
—Jamie Carter, Forbes, 27 Feb. 2025
As Lee and Kirby did with cosmic rays for the origin of the Fantastic Four, the legendary creators plucked the term gamma rays from real-world science.
—Robert Lea, Space.com, 12 Feb. 2025
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Compiled By Democrat-Gazette Staff From Wire Reports, arkansasonline.com, 6 Mar. 2025
The Threat of Cosmic Radiation Earth’s magnetic field acts as a shield, largely protecting us from high-energy radiation from the Sun and galactic cosmic rays.
—Jake Parks, Discover Magazine, 1 Mar. 2025
Supernovae Explained Stardust comes from supernovae, powerful stellar explosions that release vast amounts of energy and cosmic rays into space.
—Jamie Carter, Forbes, 27 Feb. 2025
As Lee and Kirby did with cosmic rays for the origin of the Fantastic Four, the legendary creators plucked the term gamma rays from real-world science.
—Robert Lea, Space.com, 12 Feb. 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 13 Mar. 2025.
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