Constellation Conundrum

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Across
  1. 2. The most famous constellation. Known as "The Hunter"
  2. 4. Known as the North star
  3. 7. Created when a drop of Medusa's blood mixed with sea foam.
  4. 8. A demi god
  5. 10. Also called the changed princess
Down
  1. 1. The constellations that can be all year long
  2. 3. The hero who slain Medusa and rescued Andromeda
  3. 5. To move around another object
  4. 6. To circle around your self.
  5. 8. A horrible serpent with many heads. Killed by Hercules
  6. 9. The rude queen who offended the Sea Spirits
  7. 11. The path an object takes to revolve around another object