CHARLOTTESVILLE, VIRGINIA — An international team of astronomers has detailed the structure of Antares, the brightest star in the Constellation of Scorpius when seen from Earth, according to a study in Astronomy and Astrophysics.

Writing in a news release, the team says Antares is so large that if the giant star were in the solar system, its surface would envelop the planets from Mercury to Mars.

Furthermore, Antartes’s atmosphere is unusually large and would almost reach Saturn, with a length that is 2.5 times as long as the radius of the star.

According to the team, these observations were made with the Atacama Large Millimeter Array and the Karl G. Jansky Very Large Array.

Additionally, the team was able to see that the giant star’s wind acceleration zone, or the range to which Antares could accelerate solar wind particles, is almost equal to the distance between the Sun and Uranus.

SOURCES: Astronomy and Astrophysics, National Radio Astronomy Observatory
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