binary star

Example Sentences

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In some cases, two newborn stars become gravitationally bound, creating what astronomers call a binary star system.

From Science Daily • Jun. 5, 2026

That may be because it’s a binary star, and the two stars move around each other on a mildly elliptical orbit, which could destabilize planetary orbits.

From Scientific American • Oct. 6, 2023

According to NASA, this "suggests that the protostar may in fact be an unresolved binary star," meaning there could actually be two stars beneath this mysterious cloud of molecules.

From Salon • Sep. 14, 2023

In theory, researchers think that this structure is a result of the clash between the red giant and a companion binary star.

From Space Scoop • Aug. 3, 2023

Thus, in the binary star ε Hydræ, the “magnitude” of the component stars are 3 and 6, indicating that the brighter star is about 16 times brighter than the fainter component.

From Astronomical Curiosities Facts and Fallacies by Gore, J. Ellard