THE UNIVERSE

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Across
  1. 2. Closest star to Earth
  2. 3. The path the earth follows around the sun
  3. 5. Planet surrounded by a large ring
  4. 6. Earth-like planet
  5. 8. Rock attracted by gravity
  6. 9. Array of thousands of stars spinning
  7. 10. Object smaller than a planet
Down
  1. 1. Largest planet in the solar system
  2. 4. Comet with hair
  3. 7. Planet smaller than other planets
  4. 9. Force of attraction of objects