/an tair"eez, -tar"-/, n. Astron.
a red supergiant star of the first magnitude in the constellation Scorpius.

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also called  Alpha Scorpii 

      red, semiregular variable star, with apparent visual magnitude about 1.1, the brightest star in the zodiacal constellation Scorpius and one of the largest known stars, having several hundred times the diameter of the Sun and 10,000 times the Sun's luminosity. It has a fifth-magnitude blue companion. Antares lies about 600 light-years from the Earth. The name seems to come from a Greek phrase meaning “rival of Ares” (i.e., rival of the planet Mars) and was probably given because of the star's colour and brightness.

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Universalium. 2010.

Look at other dictionaries:

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  • Antares — An*ta res, n. [Gr. ?; ? similar to + ? Mars. It was thought to resemble Mars in color.] The principal star in Scorpio: called also the {Scorpion s Heart}. [1913 Webster] …   The Collaborative International Dictionary of English

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