Celestial object as backwards rotation (6)
I believe the answer is:
saturn
'celestial object' is the definition.
'Saturn' can be an answer for 'object' (Saturn is an example). I am not certain of the 'celestial' bit.
'as backwards rotation' is the wordplay.
'backwards' shows that the letters should be reversed in order.
'rotation' becomes 'turn' (I've seen this in another clue).
'as' backwards is 'sa'.
'sa'+'turn'='SATURN'
Can you help me to learn more?
(Other definitions for saturn that I've seen before include "Titan its moon" , "The second largest planet" , "Giant planet" , "Sixth rock from the sun" , "Roman god - gas giant" .)