Perseus
Perseus (Persei)
Perseus is a prominent northern constellation representing the Greek hero who slew Medusa. It's home to the famous variable star Algol, known as the 'Demon Star,' and serves as the radiant point for the spectacular Perseid meteor shower each August. The constellation lies in a rich region of the Milky Way, offering numerous star clusters and nebulae for observation.
📜 Mythology
Perseus was the son of Zeus and the mortal Danaë. His most famous adventure was the quest to kill Medusa, one of the three Gorgon sisters whose gaze turned anyone to stone. Using gifts from the gods - winged sandals, a cap of invisibility, and a special bag - Perseus approached Medusa while looking only at her reflection in his polished shield, then beheaded her with a divine sword. On his return journey, he used Medusa's head to turn the sea monster Cetus to stone, saving Princess Andromeda. The constellation depicts him holding Medusa's severed head, represented by the star Algol.
💡 Facts
- ✦Algol, the 'Demon Star,' is an eclipsing binary that dims noticeably every 2.87 days - ancient observers noticed this 'winking'
- ✦The Perseid meteor shower, one of the most reliable annual displays, peaks around August 12 with up to 100 meteors per hour
- ✦The Double Cluster (NGC 869 and NGC 884) is one of the finest deep-sky objects in the northern sky