binary star

noun

: a system of two stars that revolve around each other under their mutual gravitation

Examples of binary star in a Sentence

Recent Examples on the Web
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In mid-December 2024, scientists discovered a pair of binary stars designated D9 orbiting each other close to Sagittarius A* (Sgr A*), the supermassive black hole at the heart of the Milky Way. Robert Lea, Space.com, 30 Dec. 2024 Scientists have never been able to detect the binary star system within the S-cluster -- until now. Julia Jacobo, ABC News, 17 Dec. 2024 As Parker pointed out, many stars are born with a binary partner from the same cloud and become binary stars. Robert Lea, Space.com, 24 Dec. 2024 Some scientists speculate that these objects may be the remnants of previous binary star mergers, suggesting that D9 could offer a glimpse into their origin. Dan Perry, Newsweek, 18 Dec. 2024 See all Example Sentences for binary star 

Word History

First Known Use

1826, in the meaning defined above

Time Traveler
The first known use of binary star was in 1826

Dictionary Entries Near binary star

Cite this Entry

“Binary star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/binary%20star. Accessed 5 Jan. 2025.

Kids Definition

binary star

noun
: a system of two stars that revolve around each other under the gravitation of both

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