This document defines key vocabulary terms related to space exploration including: universe, which is defined as the whole of space and everything in it; satellite, an object that moves around a bigger object in space; circle, to go around something in a circular motion; reach, to arrive at a place; exist, to be present in the real world; carry out, to do and complete a task; far-fetched, not easy to believe because it is improbable; and space, the area beyond Earth surrounding the planets and stars.

1. Vocabulary unit “ 12”

2. Universe: Universe: the whole of space and everything in it, including the planets and stars.

3. Satellite: an object that moves round a bigger object in space.

4. In other word: used for saying sth in a different way.

5. Circle sth : go round sth in a circle.

6. Reach sth: arrive at a place.

7. Exist: if sth exists, it is present in the real world.

8. Carry out sth: do and complete a task .

9. Far-fetched : not easy to believe because it is very improbable.

10. Space: the area beyond the earth round the plants and stars.