Earth/Space crossword

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Across
  1. 6. how minerals reflect light
  2. 7. planets seem to move backwards
  3. 8. has 1 or 2 tails
  4. 11. planetary satellite
  5. 13. inventor of telescope
  6. 16. start of the universe
  7. 17. planetisimal
  8. 19. closest to the Sun
  9. 20. Sun's atmosphere
  10. 21. very hard rock
  11. 22. common rock in our area
  12. 23. deposition forms this type of rock
  13. 25. leftover after ore processing
  14. 26. where two crustal plates meet
  15. 27. banded rock
Down
  1. 1. ocean crust does this
  2. 2. color of a mineral
  3. 3. developed laws of planetary motion
  4. 4. aethenosphere is found here
  5. 5. distance from Earth to Sun
  6. 9. shows the topography on a map
  7. 10. why we know the universe is expanding
  8. 12. table salt is this category of mineral
  9. 14. most common mineral family
  10. 15. rock produced by volcanoes
  11. 17. farthest from the sun
  12. 18. hardness scale
  13. 23. not the big bang theory
  14. 24. planets orbit in this way