Crossword Genius

Aircraft at the end of a flight in the sky (6)

Ross

I believe the answer is:

planet

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

'the sky' is the definition.
The answer and definition can be both natural objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

'aircraft at the end of a flight' is the wordplay.
'aircraft' becomes 'plane' (plane is a kind of aircraft).
'at the end of' suggests the final letters.
The final letter of 'flight' is 't'.
'plane'+'t'='PLANET'

'in' acts as a link.

Can you help me to learn more?

(Other definitions for planet that I've seen before include "Celestial body that revolves around the sun" , "Sun's orbiter" , "Large satellite of star" , "Heavenly body moving round the sun" , "Heavenly (or earthly!) body" .)

I've seen this clue in The Globe and Mail.
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