Science Vocabulary Crossword

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Across
  1. 1. The United States Space Agency
  2. 5. Why the northern hemisphere and southern hemisphere have different seasons
  3. 6. The closest star to Earth
  4. 7. The earth does this once every 365 days around the sun
  5. 9. The earth does this once every 23 hours and 56 minutes
  6. 11. The planet that we live on
  7. 14. The force that pulls us down to the ground
  8. 15. Orions _____
  9. 16. Small or large floating rocks in space
  10. 17. This orbits the earth
  11. 18. Planet Pluto
Down
  1. 2. An expert of student of astronomy
  2. 3. Star formations
  3. 4. The biggest planet in our solar system
  4. 8. The closest planet to the sun
  5. 10. A tool that makes planets and stars appear closer
  6. 12. The galaxy that earth is located in
  7. 13. Something light years away