space crossword

12345678
Across
  1. 1. a mass that orbits around another planet, not the sun
  2. 4. how hot or cold a planet is.
  3. 7. a planet where a year there is twice the length of a year on earth
  4. 8. a belt of asteroids that circles a planet
Down
  1. 1. the smallest planet in the solar system
  2. 2. what causes planets to move around the sun
  3. 3. what is called when a planet does a full rotation around the sun.
  4. 5. the only planet with life in our solar system
  5. 6. the hottest planet in our solar system