Solar System and Beyond

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Across
  1. 1. The closest planet to the Sun
  2. 4. A large group of stars held together by gravitation and separated from other groups of stars by large regions of space
  3. 7. The region between the inner and outer planets where most asteroids orbit the Sun
  4. 8. Home galaxy
  5. 9. Earthlike
  6. 10. The seventh planet from the Sun
  7. 15. Any of the planets whose orbits lie beyond the asteroid belt
  8. 16. A celestial body of ice, dust, and rock with an elongated tail and elliptical orbit
  9. 19. A ball of gas in space that produces its own light and heat
  10. 20. Any of the rocky, terrestrial planets whose orbits are inside the asteroid belt
Down
  1. 2. Objects such as planets, moons, and stars that are located in space
  2. 3. Large and small rocks or metallic masses orbiting the Sun
  3. 5. The fifth planet from the sun
  4. 6. The second planet from the Sun
  5. 8. The fourth planet from the Sun
  6. 11. The sixth planet from the Sun
  7. 12. The path one object takes as it revolves around another object in space
  8. 13. The eight planet from the Sun
  9. 14. A natural Satellite that orbits a planet
  10. 17. The third planet from the Sun
  11. 18. Any of the large celestial bodies that revolve around the Sun in the solar system
  12. 21. The star at the center of the solar system that supplies heat and light to Earth; its enormous gravity keeps the solar system in orbit