School

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Across
  1. 3. The branch of technology and industry concerned with both aviation and space flight
  2. 4. Introduce machines or devices into a process,activity or place
Down
  1. 1. A vast computer network linking other computer networks worldwide
  2. 2. An artificial body placed in orbit in order to collect or for communication
  3. 5. Commercial transactions conducted electronically on the internet
  4. 6. The flying or operating of aircraft