Astronomy

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Across
  1. 3. Planet that has a very large system of rings
  2. 8. The largest planet in the Solar System
  3. 9. Region of space from which nothing, including light, can escape
  4. 10. Celestial body that orbits another body
  5. 11. Group of many stars, along with gas, dust, and dark matter
  6. 13. Very small and dense star
  7. 16. Large celestial object that orbits a star
  8. 17. Ice ball with long tail moves around in outer space
Down
  1. 1. The path that an object takes in space when it goes around a star, a planet, or a moon
  2. 2. Everything that exists, including all of time and space and its contents
  3. 3. Center of the Solar System
  4. 4. The main, important tool for astronomy
  5. 5. Planet with poisonous atmosphere
  6. 6. Force of attraction that causes objects to move towards each other
  7. 7. Location used for observing celestial bodies and events.
  8. 12. Celestial body that radiates heat and light
  9. 14. The only planet known to accommodate life.
  10. 15. Small object in the Solar System that orbits around the Sun