Solar System easy

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Across
  1. 1. The seventh planet from the Sun and the coldest.
  2. 4. is the smallest planet in the Solar System and the closest to the Sun.
  3. 6. Second the second planet from the Sun and Earth's closest planetary neighbor.
  4. 7. At the center of our solar system, and its gravity holds the solar system together.
  5. 8. The galaxy that includes the Solar System.
  6. 9. The third planet from the Sun and the only planet known to support life.
Down
  1. 2. The sixth planet from the Sun and the second-largest in the Solar System.
  2. 3. The force by which a planet or other body draws objects toward its center and keeps all of the planets in orbit around the sun.
  3. 5. The fifth planet from the Sun and the largest in the Solar System.
  4. 8. The fourth planet from the Sun and the second-smallest planet in the Solar System.