Space

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Across
  1. 1. a large system of stars, gas, and dust held together by gravity
  2. 3. object made of ice, rock, dust, and gas that revolves around the sun
  3. 4. a division of the year into four periods marked by changes in the weather
  4. 5. an imaginary line about which a body rotates
  5. 7. the large gaseous planets with multiple moons and ring systems
  6. 9. one half of Earth
  7. 10. the motion of one object around another object
  8. 11. a mass of hot gases that produces its own light energy
  9. 12. a natural object that orbits a planet
Down
  1. 2. a unit of measure used to describe the distance in space
  2. 5. an object much smaller than a planet that orbits the sun
  3. 6. The small rocky planets having only a few moons
  4. 8. the spinning of an object on its axis