Arcturus is a red supergiant with a radius 25 times larger than our Sun.
If our Sun was replaced by Arcturus it's outer edges would reach beyond Mars. See related link for a pictorial representation.
Arcturus is 36.7 light years from Earth. As a light year is a measurement of the distance travelled by light in one year, this distance directly translates to the time taken for light to reach us from Arcturus; slightly less than 37 years.
In other words, if you look toward Arcturus on your 37th birthday, the light that reaches your eye actually left Arcturus around the time that you were born. In astronomical terms, that's a short walk to the corner shop.
From the Northern Hemisphere, just follow the arc of the handle of the Big Dipper. (Arc to Arcturus)
It is not. Arcturus is brighter.It is not. Arcturus is brighter.It is not. Arcturus is brighter.It is not. Arcturus is brighter.
Regulus Arcturus Black.Regulus Arcturus Black.Regulus Arcturus Black.Regulus Arcturus Black.
Arcturus is in class A.
No, Arcturus is a star.
Arcturus
I don't know about pointing at two stars, but the last two stars in the big dipper's handle point to Arcturus, one of the brightest stars in the sky. Arcturus is in the constellation of Bootes, the Herdsman.
The temperature of Arcturus is about 4,290 Kelvin
Arcturus
Arcturus is the Zenith Star of the Hawaiian Islands
The Arcturus Star is located in the constellation Bootes.
No, Arcturus is a red giant star, not a nebula.