About-turn in forming a link in space (5)
I believe the answer is:
lunik
'space' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'about-turn in forming a link' is the wordplay.
I cannot really see how this works, but
'turn' could be 'u' (a 'U-turn' is a kind of turn) and 'u' is located in the answer.
an anagram of 'link' is 'lnik' which is located in the left over letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Another definition for lunik that I've seen is " Soviet moon probe".)