Perseus climbs the eastern sky on autumn nights. It consists of two ribbons of stars that join at Mirfak, its leading light. Perseus contains the most famous variable star in the sky: Algol, the Demon Star, which gets fainter every three days.
Perseus climbs the eastern sky on autumn nights. It consists of two ribbons of stars that join at Mirfak, its leading light. Perseus contains the most famous variable star in the sky: Algol, the Demon Star, which gets fainter every three days.