Its name is Arabic for "the ghoul" or "the demon." One of the 100 brightest stars in the sky, this system actually contains at least four stars, two of them visually dominant. A, a blue-white star, is about ten times brighter than B, a dimmer yellow star. The two stars revolve around each other at a distance of 10 million kilometers every 69 hours, thus forming one of the prime examples of eclipsing binaries in the night sky. Often seen as Medusa, this star lies in a con
Its name is Arabic for "the ghoul" or "the demon." One of the 100 brightest stars in the sky, this system actually contains at least four stars, two of them visually dominant. A, a blue-white star, is about ten times brighter than B, a dimmer yellow star. The two stars revolve around each other at a distance of 10 million kilometers every 69 hours, thus forming one of the prime examples of eclipsing binaries in the night sky. Often seen as Medusa, this star lies in a constellation associated with the gorgon's slayer. FTP, identify this second-brightest star in Perseus that shares its name with a computer language.
Its name is Arabic for "the ghoul" or "the demon." One of the 100 brightest stars in the sky, this system actually contains at least four stars, two of them visually dominant.
{Algol}