noun
a type of electromagnetic radiation of very high frequency and energy, emitted by the nuclei of some radioactive substances
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Scientists use specialized equipment to detect and study gamma rays emitted from distant galaxies.
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Did you know that gamma rays are the most energetic form of light in the universe?
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I heard that superhero movies often feature characters with powers like shooting gamma rays from their hands.
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Her smile was like a burst of gamma rays, bright and powerful.