Antares, in the Constellation of Scorpius rising in the SE. (March 2012).[/caption]
We've seen Betelgeuse in 'How Big Is BIG?'. The super-giant star Antares sits to the lower-left of M4 (NGC6121), the globular cluster in the Constellation of Scorpius. They are mainly observed in young galactic structures such as open clusters, the arms of spiral galaxies, and in irregular galaxies.
Classed in the 'red' category, its other popular counterpart, Betelgeuse are called old stars and are much cooler that 'blue' stars.
It is about 550 light years away from Earth and its luminosity is measured at 65,000 times brighter than that of our Sun. Notice the comparison between Arcturus and Antares in the diagram below.
Also known to ancient astronomers as one of four Royal Stars including, Aldebaran (East), Regulus (North) and Fomalhaut (South).
Antares in comparison to the other giant stars.
No comments:
Post a Comment