School

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