Earth’s satellite (4)

I think it could be either:

boon

moon

'earth's satellite' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for moon that I've seen before include "Remove boxers, maybe" , "who headed a religious 29 [CULT]" , "Idle (around) - satellite" , "Phoebe" , "Daydream - Europa of Jupiter, say" .)

I've seen this clue in the Newsday, The Star Tribune, The Daily Mail and The Mirror.

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