Antares

American  

[an-tair-eez, -tar-] / ænˈtɛər iz, -ˈtær- /

noun

Astronomy.

1. a red supergiant star of the first magnitude in the constellation Scorpius.

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Antares British  

/ ænˈtɛəriːz /

noun

1. the brightest star in the constellation Scorpius. It is a variable binary star whose main component, a red supergiant, is associated with a fainter green component. Visual magnitude: 1.2 (red), 6.8 (green); spectral type: M1.5Ib (red); distance: 600 light years

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Etymology

Origin of Antares

from Greek Antarēs, literally: simulating Mars (in colour), from _anti- + Arēs Mars

Example Sentences

Earlier this week, the Energy Department confirmed that a design from rival Antares Nuclear will be the first of several reactors to go critical by the July 4 deadline.

From Barron's • Jun. 11, 2026

Antares, which focuses on private credit, liquid credit and other liquidity strategies, had roughly $90 billion in capital under management and administration as of Sept. 30.

From The Wall Street Journal • Mar. 30, 2026

And I do have stellar favorites, which I always look for first after stepping outside: Vega, high up in the constellation Lyra, Arcturus in Boötes and Antares in Scorpius, to name just a few.

From Scientific American • Aug. 25, 2023

By 1993, Montserrat’s a tart-tongued sound editor seven years into a freelancing stint at Antares, a second-tier studio.

From Los Angeles Times • Jul. 17, 2023

Aldebaran has a trace of rose-color in its light, while Betelgeuse is of a very deep orange, and Antares may be described as fire-red.

From Astronomy with an Opera-glass A Popular Introduction to the Study of the Starry Heavens with the Simplest of Optical Instruments by Serviss, Garrett Putman