### Clue: Space age opportunity for school-leavers? (3,4)
### Answer: GAP YEAR 
 ### Explanation: Definition: opportunity for school-leavers
 GAP(a space/a break between two things) + YEAR(a unit of measurement of the time of existence/age).
Defn: A break from studies, taken by school-leavers before going on to further education, first common in the 1960s, which could be considered early space age.