The solar system

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Across
  1. 2. The planet famous for its Great Red Spot. (7 letters)
  2. 5. The force that keeps planets in orbit.
  3. 6. A natural satellite that orbits the Earth. (4 letters)
  4. 8. The planet known for its red color.
Down
  1. 1. The phase of the Moon when it appears fully lit.
  2. 3. The only planet known to support life.
  3. 4. The planet with the largest rings.
  4. 6. The closest planet to the Sun.
  5. 7. The path a planet takes around the Sun.