Crossword Genius

Coming soon, time when the earth cools (5)

Ross

I believe the answer is:

night

'when the earth cools' is the definition.
(typically colder part of the day)

'coming soon time' is the wordplay.
'coming soon' becomes 'nigh'.
'time' becomes 't' (abbreviation).
'nigh'+'t'='NIGHT'

(Other definitions for night that I've seen before include "What proverbially follows day" , "period of gloom" , "follow-up to 16 [TWILIGHT]" , "A Hard Day's (the Beatles)" , "Ignorance" .)

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