binary star
noun
: a system of two stars that revolve around each other under their mutual gravitation
Examples of binary star in a Sentence
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Antares is, in reality, a binary star system, made up of a red supergiant star with a white main sequence companion, though the light of the red giant dominates the naked-eye view from Earth.
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Anthony Wood, Space.com, 29 Aug. 2025
Astronomers using the James Webb Space Telescope found a planet while observing Alpha Centauri, a system of three stars orbiting each other — binary stars Alpha Centauri A and B, along with the red dwarf star Proxima Centauri.
—Jamie Carter, Forbes.com, 9 Aug. 2025
Detecting and analyzing these oddities can help Bédard, Sahu, and other researchers gain a more comprehensive understanding of the ultimate fate of many binary star systems.
—Andrew Paul Aug 6, Popular Science, 6 Aug. 2025
The discovery means that Betelgeuse is a binary star system.
—Robin George Andrews, New York Times, 22 July 2025
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Anthony Wood, Space.com, 29 Aug. 2025
Astronomers using the James Webb Space Telescope found a planet while observing Alpha Centauri, a system of three stars orbiting each other — binary stars Alpha Centauri A and B, along with the red dwarf star Proxima Centauri.
—Jamie Carter, Forbes.com, 9 Aug. 2025
Detecting and analyzing these oddities can help Bédard, Sahu, and other researchers gain a more comprehensive understanding of the ultimate fate of many binary star systems.
—Andrew Paul Aug 6, Popular Science, 6 Aug. 2025
The discovery means that Betelgeuse is a binary star system.
—Robin George Andrews, New York Times, 22 July 2025
See All Example Sentences for binary star
Cite this Entry
“Binary star.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/binary%20star. Accessed 8 Sep. 2025.
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