cohort. n. 1. (Military) one of the ten units of between 300 and 600 men in an ancient Roman Legion. 2. any band of warriors or associates: the cohorts of Satan. 3.
As an early M-type supergiant, Betelgeuse is one of the largest, most luminous and yet one of the most ethereal stars known. A radius of 5.5 AU is roughly 7003118000000000000â 1180 times the radius of the Sunâable to contain over 2 quadrillion Earths (2.15 Ã 1015) or more than 1.6 billion (1.65 Ã 109) Suns.
It is a red supergiant and one of the largest stars known after Antares. It is about 550 times larger than the Sun and radiates as more than 100 000 suns combined. Aged only a few million years, Betelgeuse is already approaching the end of his life.More massive a star is more the temperature is high at its center.f Betelgeuse were at the center of our solar system, its radius, â 650 times that of the Sun, would extend between the orbit of Mars and Jupiter. Aldebaran is a red giant of magnitude 0.86 and spectral type K5 III, which means it is orange, tall and it left the main sequence after using all its hydrogen.