Crossword Genius

Planet near the centre (5)

Ross

I believe the answer is:

earth

I'm a little stuck... Click here to teach me more about this clue!

'planet' is the definition.
(Earth is an example)

'near the centre' is the wordplay.
'EARTH' is hidden in amongst the letters.
However, I'm uncertain how this is indicated.

Can you help me to learn more?

(Other definitions for earth that I've seen before include "Connection between an electrical device and conductor" , "hideaway" , "brownish pigment?" , "Soil; electrical connection" , "Land" .)

I've seen this clue in The Sun.
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