: a star whose brightness changes usually in more or less regular periods
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Many of these alerts will be triggered by variable stars, which cyclically change in brightness.—IEEE Spectrum, 23 June 2025 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 Among the supernovas in the data will be other transient events such as variable stars and kilonovas, the violent collision between extreme dense stellar remnants called neutron stars.—Robert Lea, Space.com, 27 Jan. 2025 In particular, Leavitt would scrutinize images of the Small and Large Magellanic Clouds, and had identified 1,800 variable stars within them.—Keith Cooper, Space.com, 17 Jan. 2025 See All Example Sentences for variable star
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