Roast tuna prepared for distant traveller (9)

I believe the answer is:

astronaut

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'distant traveller' is the definition.
'astronaut' can be an answer for 'traveller' (astronaut is a kind of traveller). I am not sure about the 'distant' bit.

'roast tuna prepared' is the wordplay.
'prepared' indicates an anagram.
'roast'+'tuna'='roasttuna'
'roasttuna' with letters rearranged gives 'ASTRONAUT'.

'for' acts as a link.

Can you help me to learn more?

(Other definitions for astronaut that I've seen before include "heavenly voyager" , "Skier" , "Buzz Aldrin, for example" , "Person trained to travel in a spacecraft" , "spaceman" .)

I've seen this clue in The Daily Express.

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