Space traveller from remote parts (6)
I believe the answer is:
meteor
'space traveller' is the definition.
(I've seen this before)
'remote parts' is the wordplay.
'parts' is an anagram indicator (the parts of the original word ordered differently).
'remote' is an anagram of 'METEOR'.
'from' acts as a link.
(Other definitions for meteor that I've seen before include "Remote sort of heavenly body" , "extraterrestrial debris" , "Remote (anag)" , "Component of shower" , "rock falling to earth" .)