Binary system (astronomy)
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A binary system is an astronomy term referring to two objects in space, usually stars, which are so close that their gravitational forces attract one another into a mutual orbit. Astronomers find that more than 50% of stars are binary stars
See Binary star for the common case of a binary system composed of two stars.
| Location | Satellite A | Satellite B |
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| Kuiper Belt | Pluto | Charon
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