Space

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Across
  1. 2. Our current North Star
  2. 4. The point in a planet´s orbit farthest from the Sun
  3. 5. the ´supercontinent´ land mass that was present 200 million years ago
  4. 11. the layer of earth atmosphere immediately before space
  5. 12. the planet with the largest most visible rings
  6. 13. The type of planet that includes jupiter,Saturn, Uranus, and Neptune
  7. 15. The largest planet in the solar system
  8. 16. The most abundant gas in earth atmosphere
  9. 17. particles found in the outer van allen belt
  10. 19. the process by which life produced oxygen
  11. 20. the month in which the earth is closest to the sun
  12. 21. the radio frequency that has the ability to reflect off the ionosphere
  13. 23. The only planet with liquid water on the surface
  14. 24. is the closest star to earth, other than the sun
  15. 25. the layer of earth´s atmosphere that contains highly charged particles
Down
  1. 1. Once considered a planet, this object is now dwarf out in the kuiper belt
  2. 3. the study of seismic waves
  3. 6. The theorized source of water on earth
  4. 7. the region around earth influenced by earth magnectic field
  5. 8. the hottest planet in the solar system
  6. 9. the type of planet that includes mercury that includes mercury, venus, earth, and mars
  7. 10. The month in which the Earth is closest to the Sun
  8. 14. the closest celestial object to the earth
  9. 17. the largest thing in the solar system
  10. 18. type of fault
  11. 22. the average distance of plate movement in a year