Unusually remote shooting star (6)
I believe the answer is:
meteor
'shooting star' is the definition.
('meteor' can be a synonym of 'shooting star')
'unusually remote' is the wordplay.
'unusually' indicates anagramming the letters.
'remote' anagrammed gives 'METEOR'.
(Other definitions for meteor that I've seen before include "Component of shower" , "Body entering earth's atmosphere" , "sky phenomenon" , "extraterrestrial debris" , "Body falling from space" .)