Space Crossword

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Across
  1. 2. The small red planet next to Earth
  2. 5. The rock that circles around the Earth
  3. 6. The planet we live on
  4. 7. The part of the universe outside Earth
  5. 8. Move in a circle around something
  6. 9. The biggest planet in our solar system
Down
  1. 1. A large object that circles a star
  2. 3. A small rock that orbits the sun
  3. 4. A group of billions of stars held together
  4. 5. An object that falls to Earth from space
  5. 7. A giant burning ball of gas in space