First-magnitude red star in the constellation Scorpio. Antares (Ant-Ares) is Greek for "Rival of Mars", so named because when the path of Mars takes it into this part of the sky, the two celestial objects are very easy to mistake for each other.

Antares is a red supergiant, 300 times the sun's diameter and over 3000 times as luminous as the sun. It is nearly 300 light-years away and located near the ecliptic thus occasionally hidden by the moon like Regulus, Spica and Aldebaran.

Actually, according to these two pages ->

Antares is roughly 700 ~ 900 times larger in diameter than the Sun, and 9 000 ~ 12 000 times more luminous. Antares A is one of the largest stars out there, along with Betelgeuse.

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.


© Webster 1913.

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