binary star

1. A stellar system in which two stars orbit around their common center of mass; double star.

   Doppelstern

   бина́рная звёздная систе́маbinárnaja zvjózdnaja sistéma, бина́рная звезда́binárnaja zvezdá, двойна́я звезда́dvojnája zvezdá

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

1. Binary stars and double stars are not synonyms.

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2. Sirius is a binary star system and is about 8.6 light-years distant from our sun.

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3. A symbiotic star system is a binary star system that is composed of a red giant and a white dwarf.

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4. When the binary stars were discovered, the discovery was hailed as a proof of the universal prevalence of the law of gravitation.

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