Solar System Fun

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Across
  1. 2. A system of millions or billions of stars.
  2. 5. The name for the four inner planets
  3. 6. This is the largest planet
  4. 10. The Planet that we live on
  5. 14. Mars has these that are extinct
  6. 16. Mercury doesn't have this
  7. 18. This planet is red.
  8. 19. This is the hottest planet
  9. 22. Study of the moon,stars, and other objects.
  10. 23. Mercury has a surface similar to this
  11. 24. The path of an object as it revolves around another object
  12. 25. This is the great red spot on Jupiter
Down
  1. 1. It often rains this type of acid on Venus
  2. 3. A scientist who studies the universe beyond Earth
  3. 4. A gas giant made of hydrogen,helium, and methane.
  4. 7. Saturns rings are made of dust and this
  5. 8. This gives Uranus
  6. 9. The outer planets
  7. 11. Saturn has a lot of these
  8. 12. A chunk of rock or dust in space
  9. 13. Six planet from the Sun
  10. 15. Rocky debris revolving around the Sun
  11. 17. Energy source for all the planets
  12. 20. This planet rotates on it's sides and has any moons
  13. 21. The closest planet to the Sun.