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'Bi' means two(2) . So a Binary Star System is two stars rotating about each other. In space the star Procyon, in the 'Little Dog ' Comnstelltion is a binary system. Procyon A is the Main Star and it has procyon B revolving around Procyon A

They are commonly referred to as the Little Dog, and the Pup.

Much nearer to home, The Earth and the Moon are thought to be a planetary binary system, because our moon is so large, compared to other moons and planets, that the Earth moves against the Moon too!!!!!

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lenpollock

Lvl 16
1y ago

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