Cygnus was a faithful friend of Phaeton, the son of Helio, who was thrown down b

Cygnus was a faithful friend of Phaeton, the son of Helio, who was thrown down by Zeus after losing control of the Sun's chariot. Devastated by the death of his friend, Cygnus repeatedly dived into the river Eridanus, trying to recover Phaeton's body.