One of those looking up woman staring into space (10)
I believe the answer is:
astronomer
'one' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for astronomer that I've seen before include "Stargazer" , "Moon starer (anag.)" , "One studying the universe" , "Observer of space" , "scientist" .)