Solar System

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Across
  1. 3. Red Planet
  2. 5. Only planet with life
  3. 6. Earth-like
  4. 8. Smallest Planet
  5. 9. Gas Giants
Down
  1. 1. Earth's sister planet
  2. 2. Terrestrial Planets
  3. 4. Gases that surround the planet
  4. 7. Moved repeatedly around
  5. 8. Celestial object that orbits a planet