Space

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Across
  1. 4. The brightest object in the sky besides the moon and the sun
  2. 6. The planet we live on
  3. 7. used to be a planet
  4. 8. The coldest planet
  5. 10. the source of light in our solar system (starts with our)
  6. 12. A group of many, many solar systems
  7. 14. The first planet from the sun
  8. 16. The red planet
Down
  1. 1. Sphere that orbits a star
  2. 2. The biggest planet in our solar system
  3. 3. the planet known for rings
  4. 5. The planet named after the god of the sea
  5. 9. A group of planets, moons and stars
  6. 11. large ball of hot gas
  7. 13. The farthest object ever visited in space by a probe
  8. 14. Sphere orbiting a planet
  9. 15. Everything we know, full of galaxys