variable star


Definition of variable star

: a star whose brightness changes usually in more or less regular periods

Examples of variable star in a Sentence

Recent Examples on the Web The image from Hubble shows a nebula (a gas cloud) that happened during one of the larger outbursts from the variable star. Elizabeth Howell, Forbes, 26 Apr. 2021 According to some models, the luminous blue variable star might have skipped the supernova stage and formed a slow-spinning black hole instead, Allan told Gizmodo. Jennifer Leman, Popular Mechanics, 6 July 2020 The ginormous star, a type of luminous blue variable star, shined between 2.5 and 3.5 times brighter than our sun. Jennifer Leman, Popular Mechanics, 6 July 2020 Betelgeuse has always been a variable star (though far less variable than at present), and there are a couple of potential causes. John Timmer, Ars Technica, 14 Feb. 2020 An article on Tuesday about the Vera C. Rubin Observatory misidentified the astronomer who discovered a relationship between the luminosities and periodicities of variable stars. New York Times, 14 Jan. 2020 On top of these random events, Betelgeuse is also known to be a semi-regular variable star. The Economist, 11 Jan. 2020 Bright idea Skowron and her colleagues mapped the Milky Way in three dimensions using 2,431 classical Cepheid variable stars. Nadia Drake, National Geographic, 1 Aug. 2019 The telescope gathered a trove of unprecedented data on the pulsations of variable stars throughout the galaxy. Quanta Magazine, 10 Mar. 2015 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'variable star.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of variable star

1788, in the meaning defined above

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Time Traveler for variable star

Time Traveler

The first known use of variable star was in 1788

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Cite this Entry

“Variable star.” Dictionary, Merriam-Webster, Accessed 10 Aug. 2022.

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