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| a system of two stars that revolve about a common center of mass |
| the polestar or North Star, a star of the second magnitude close to the north pole of the heavens, in the constellation Ursa Minor |
| flare star | |
| —n | |
| a red dwarf star in which outbursts, thought to be analogous to solar flares, occur, increasing the luminosity by several magnitudes in a few minutes | |
| flare star (flâr) Pronunciation Key
A variable star that sporadically displays sudden increases in brightness, sometimes becoming six times as bright in a matter of only a few minutes, after which it gradually fades back to its normal brightness. The cause of this phenomenon is thought to be an event similar to a solar flare, but on a more intense scale with a much higher emission of x-rays. |