Inner planets

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Across
  1. 2. A celestial body that orbits the Earth
  2. 4. Hottest planet in the solar system
  3. 6. Explored the surface of mars, grabbing materials and taking photos
  4. 8. A type of planet with a rocky surface
  5. 9. Planets outside the asteroid belt
  6. 10. Known as the red planet
Down
  1. 1. A layer on planets that keeps gases and temperature inside
  2. 3. Closest planet to our sun, named after a greek god
  3. 5. Planets inside the asteroid belt
  4. 7. When one object rotates around another