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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First discovered in 1947, kaons aren’t commonly found in nature but can be created inside particle detectors, as well as by cosmic rays crashing into Earth’s atmosphere. —

Clara Moskowitz, Scientific American, 1 Oct. 2024 This atmosphere, along with a huge magnet in the center of the Earth, helps protect us from the Sun’s harmful radiation, mostly solar wind and cosmic rays. —

Thomas Orlando, Discover Magazine, 9 Aug. 2024 Tracking lines arc through the expansive field, recalling cosmic rays shooting across a cloud chamber. —

Christopher Knight, Los Angeles Times, 29 Oct. 2024 Our planet’s magnetic field shields Earth’s biosphere and atmosphere from barrages of high-energy cosmic rays and dangerous outbursts of solar particles and radiation. —

Saima S. Iqbal, Scientific American, 23 Oct. 2024 See all Example Sentences for cosmic ray