Crossword Genius

Aren’t changes blocking give-and-take between heavenly bodies? (14)

Ross

I believe the answer is:

interplanetary

'between heavenly bodies?' is the definition.
(between planets)

'aren't changes blocking give-and-take' is the wordplay.
'changes' indicates an anagram.
'blocking' is an insertion indicator.
'give-and-take' becomes 'interplay' (interactions between things).
'arent' anagrammed gives 'netar'.
'netar' placed into 'interplay' is 'INTERPLANETARY'.

I've seen this clue in The Times.
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