Across
- 4. : to become or make somebody completely involved in something.
- 5. : a device through which sound is heard.
- 6. : a special doctor who is trained to cut open people to make them better.
- 7. : someone who travels and works in a spacecraft.
- 8. : to start using a system.
- 9. : all space, including all the stars and planets.
Down
- 1. : a piece of equipment that can find or measure light, heat, sound… etc.
- 2. : a scientist who studies the stars and planets.
- 3. Intelligence (AI) : the development of machines to perform tasks which normally require human intelligence.