Crossword Genius

Exploding star — a sun? Prove that’s wrong (9)

Ross

I believe the answer is:

supernova

'exploding star' is the definition.
(I've seen this before)

'a sun? prove that's wrong' is the wordplay.
'that's wrong' indicates an anagram.
'a'+'sun'+'prove'='asunprove'
'asunprove' anagrammed gives 'SUPERNOVA'.

(Other definitions for supernova that I've seen before include "The sort of star" , "Exploding star that becomes extremely luminous" , "Exploding star that becomes much brighter" , "Star in decline" , "Star that explodes and becomes extremely luminous" .)

I've seen this clue in The Times.
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