Pollutes a planet (4)

I believe the answer is:

mars

I believe this is a double definition.

'pollutes' is the first definition.
(pollute can mean to spoil or mar)

'a planet' is the second definition.
(Mars is a planet)

(Other definitions for mars that I've seen before include "Damages - planet" , "Spoils - heavenly body" , "one associated with war" , "Holst's Bringer of War" , "Fourth rock from the Sun" .)

I've seen this clue in The Telegraph.

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