: a star whose brightness changes usually in more or less regular periods
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After weeks, months and years of observations, astronomers will have a time-lapse record revealing anything that explodes, flashes or moves – such as supernovas, variable stars or asteroids.—Samantha Thompson, Space.com, 7 July 2025 Many of these alerts will be triggered by variable stars, which cyclically change in brightness.—IEEE Spectrum, 23 June 2025 As one of the largest, most luminous stars in our Milky Way Galaxy, the variable star VY Canis Majoris is a likely candidates for the next naked-eye core-collapse supernova, said Guinan.—Bruce Dorminey, Forbes, 13 Jan. 2025 This region, about 8,000 light-years from Earth, is located adjacent to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right.—Alan Taylor, The Atlantic, 8 Dec. 2024 See All Example Sentences for variable star
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