Cosy starship designed using this? (12)
I believe the answer is:
astrophysics
'this?' is the definition.
The definition suggests a singular noun which matches the answer.
'cosy starship designed' is the wordplay.
'designed' indicates anagramming the letters (designed with the letters).
'cosy'+'starship'='cosystarship'
'cosystarship' is an anagram of 'ASTROPHYSICS'.
'using' acts as a link.
Can you help me to learn more?
(Other definitions for astrophysics that I've seen before include "Science of stars and galaxies" , "Branch of science" , "Science of the properties of celestial bodies" .)