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Proxima Centauri is a very dim red-dwarf companion of the bright star Alpha Centauri in the southern Centaurus constellation. Proxima is about 4.2 light years from Earth, while Alpha Centauri is 4.5 LY away.

Even though Proxima Centauri is the closest star to our own, it is almost invisible to the naked eye.

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16y ago

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