Outer Space

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Across
  1. 2. The only planet that is named after a Greek god
  2. 5. Made from ice, dust and rocks
  3. 7. A planet covered in rust
  4. 8. The study of everything in the universe
  5. 9. Flaming rocks that sometimes crash into planets
Down
  1. 1. The planet furthest from the sun
  2. 3. First person to the moon
  3. 4. When the sun cover the moon and the other way around too
  4. 6. Largest known star so far