|the brightness of a star in comparison with that of the sun: the luminosity of Sirius is expressed as 23 and indicates intrinsic brightness 23 times greater than the sun|
|the polestar or North Star, a star of the second magnitude close to the north pole of the heavens, in the constellation Ursa Minor|
sixth brightest star in the night sky and the brightest in the constellation Auriga, with an apparent visual magnitude of 0.08. Capella is a spectroscopic binary comprising two G-type giant stars. It lies about 42 light-years from the Earth
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