Science and technology

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Across
  1. 4. - Celestial study
  2. 7. - Step-by-step process
  3. 8. - Disease prevention
  4. 11. - Global network
  5. 13. - Entire DNA set
Down
  1. 1. - Basic particle
  2. 2. - Biological technology
  3. 3. - Tiny technology
  4. 5. - Energy from the sun
  5. 6. - Orbital communication
  6. 9. - Digital security
  7. 10. - Physics realm
  8. 12. - Genetic code