Space Odyssey

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Across
  1. 2. Huge cluster of stars and planets.
  2. 4. Rock and ice with a bright tail.
  3. 5. Shining ball of gas in space.
  4. 9. Center of our solar system.
  5. 10. Shooting star that burns in the sky.
  6. 11. Path around a planet or star.
  7. 12. Earth's natural satellite.
  8. 13. Imaginary being from another world.
Down
  1. 1. Big celestial body that orbits a star.
  2. 3. Planet with stunning rings.
  3. 5. Vehicle for interstellar travel.
  4. 6. Spacecraft for exploration.
  5. 7. Space rock floating in the void.
  6. 8. Space explorer in a suit.