SPACE

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Across
  1. 1. the milky way _______ is a _______
  2. 4. our sister planet
  3. 7. a jacket for this planet
  4. 9. rusting ______ makes mars look red
  5. 10. above the troposphere and below the mesosphere there is the ______
  6. 12. most scientists believe that _______ is a elementary particle (meaning any of various fundamental subatomic particles, including those that are the smallest and most basic constituents of matter)
  7. 13. this is where there is more cold particles
  8. 15. a metallic body in outer space
  9. 17. this has very strong gravity so much that light cant escape
  10. 18. this is one of the dwarf planets
  11. 19. our moon ______ earth
Down
  1. 2. Neil _______ was the first man to the moon
  2. 3. supermasseve and _______ black holes types of black holes
  3. 5. our ______ system
  4. 6. _______ has more than 50 moons
  5. 8. this planet is tipped on its side
  6. 11. ______ orbit earth and give signals to scientists
  7. 14. NASA's ______ spacecraft took the first close up pitcher of io
  8. 16. Isaac ______ understood how one body can orbit another
  9. 18. AKA the red planet
  10. 20. the big ______ is what started the universe