Super cool space thingy

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Across
  1. 4. the force that is keeping us on Earth
  2. 5. a rock that falls from space
  3. 7. the path that a planet takes around the sun
  4. 8. way a candy bar was named after it,we are in it
  5. 9. super cool swallows anything in its path huge
  6. 11. this has nothing to do with space and it is used in mashed potatos
  7. 14. a big star
  8. 16. A robot in space that helps us have WiFi
  9. 17. we find it the opposite of the sun
  10. 18. an example is the sun
Down
  1. 1. floating balls in space,We live on one.
  2. 2. someone who explores space
  3. 3. We live here,is the only planet(that we know of) that is far enough from the sun and close enough from the sun to have life
  4. 6. people use this to explore space
  5. 10. a group of stars forming a picture
  6. 12. Creatures that we have not found yet
  7. 13. the biggest planet
  8. 15. a robot that explores planets