Beta Persei, more commonly referred to as Algol, is a binary eclipsing star system located about 93 light years from Earth. It is 3.5 times larger than the Sun and can be found in the Perseus constellation in the Andromeda Galaxy. In the constellation, Perseus holds the head of severed head of Medusa, where Beta Persei is located, the third eye of the Gorgon. Algol is one of the most frequently studied star systems in the sky, the prototype of binary eclipsing stars. During the eclipse, the smaller and brighter Beta star hides behind its companion star, a dying giant star. Typically, brighter stars tend to die out faster, using its fuel, being Hydrogen like the Sun, to burn brighter and hotter. But these two stars are so close together (about five percent of the distance from the Earth to the Sun) that the when they eclipse, the Beta star essentially feeds off its companion star’s energy. This is known to astronomers as “the Algol paradox.” When one star eclipses the other, the change in brightness causes the system to appear to “blink.” The eclipse is visible to the naked eye and takes less than three days to complete a full cycle. Algol is visible when the brighter Beta star is behind its companion, between 8:00PM and 12:00AM (CT) in the zenith of New York. Specific dates vary from year to year. The system was officially discovered in 1667 by the Italian astronomer Geminiano Montanari, but must have been known long before that as it popped its head into the literature and legends of many cultures under various nomenclatures. The name Algol stems from the Arabian’s Ra’s al Ghul, loosely translated to “the Demon’s Head.” The Hebrews refer to it as “Satan’s Head” and “Lilith,” while the Chinese refer to it as “Piled-up Corpses.” Astronomers and philosophers alike consider it to be the most unlucky, dangerous and violent star in the sky.