Sensible journey for returning astronaut to make? (4-2-5)
I believe the answer is:
down-to-earth
'sensible' is the definition.
(I've seen this before)
'journey for returning astronaut to make?' is the wordplay.
I cannot really understand how this works, but
'for' could be 'to' (eg both can mean 'in the opinion of') and 'to' is found in the answer.
'make?' could be 'do' (do can mean to make or prepare) and 'do' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for down-to-earth that I've seen before include "Practical, no-nonsense" , "Far from assuming" , "Sensible - practical - realistic" , "where Newton's apple fell?" .)