6

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Across
  1. 1. Study of past events
  2. 6. Designing and building things
  3. 7. Use of scientific knowledge
  4. 8. Center of our solar system
  5. 11. Vehicle for space travel
  6. 13. Earth’s natural satellite
  7. 14. Study of numbers
  8. 15. Study of Earth
  9. 17. Designing robots
  10. 21. Study of matter and energy
  11. 22. Extraterrestrial being
  12. 23. Study of space
  13. 24. Shining celestial body
  14. 25. Large system of stars
Down
  1. 2. Study of the natural world
  2. 3. Study of money
  3. 4. Language and literature subject
  4. 5. Tool to see distant objects
  5. 9. Study of living things
  6. 10. All of space and time
  7. 12. Orbits a star
  8. 16. Space travel vehicle
  9. 18. Writing computer programs
  10. 19. Study of substances
  11. 20. Study of the mind