Astronomy

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Across
  1. 6. A group of icy objects far away from other objects in the solar system
  2. 8. An area of space consisting of small solar system objects
  3. 11. Celestial objects made of an icy core and dust
  4. 13. Current number of planets in our solar system
  5. 14. A meteor that passes through the earth's atmosphere and reaches the ground
  6. 16. Number of rings of Saturn
  7. 20. Comet that passes Earth's orbit every 76 years (2 Words)
  8. 22. Mixture of gasses that surrounds each planet
  9. 26. Small rocky objects outside of the Earth's atmosphere
  10. 32. Dwarf planet with two orbiting moons
  11. 34. Depression caused by the impact of a meteoroid or asteroid
  12. 35. Theory of a spike in asteroids (4 Words)
  13. 36. Largest moon of Saturn
  14. 37. Curved path of a celestial object around a moon, planet, or star
  15. 41. Discovered the first asteroid (2 Words)
  16. 43. Celestial bodies not classified as planets or moons
Down
  1. 1. Smallest planet in our solar system
  2. 2. Burning up rapidly moving meteor
  3. 3. The four inner planets of our Solar System
  4. 4. Areas of the moon that are lighter in color (2 Words)
  5. 5. An ion tail which always points away from the sun (2 Words)
  6. 7. A force that pulls objects towards the center of a planet or other body
  7. 9. Large number of meteors radiating from one point in the sky (2 Words)
  8. 10. Small objects that orbit the sun
  9. 12. Small bodies that orbit the sun at a distance further than Neptune (3 Words)
  10. 15. The only dwarf planet with no known moons
  11. 17. Indentation where volcanic lava once flowed on the moon
  12. 18. The red planet
  13. 19. The moon of the dwarf planet Eris
  14. 21. Dwarf planet originally classified as a comet
  15. 23. Third planet from the sun
  16. 24. Furthest planet from the sun
  17. 25. Areas of the moon that are darker in color
  18. 26. Rocky object that heats up as it enters the earth's atmosphere
  19. 27. Area of space beyond the orbit of Neptune (2 Words)
  20. 28. The largest planet in our solar system
  21. 29. Center of a comet
  22. 30. A tail of dust from a disintegrating nucleus (2 Words)
  23. 31. Nickname for comets (2 Words)
  24. 33. Dwarf planet which used to be classified as a planet
  25. 34. Cloud of gasses around the center of a comet
  26. 38. The collection of planets, their moons, and smaller celestial objects
  27. 39. The four outer planets of our Solar System
  28. 40. The galaxy we are in (2 Words)
  29. 42. The most distant celestial object in the Solar System