[an-tair-eez, -tar-] 
| a red supergiant star of the first magnitude in the constellation Scorpius. |
| An·tar·es (ān-târ'ēz, -tār'-) n. A giant red binary star, the brightest in the constellation Scorpio, about 424 light-years from Earth. [Greek Antarēs : anti-, rival of; see anti- + Arēs, Ares, the planet Mars.] |
Antares
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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