Celestial object (3)
'celestial object' is the definition.
(celestial body)
This is the entire clue.
(Other definitions for sun that I've seen before include "Major star" , "Earth's nearest star" , "British publication" , "Nearest star to Earth" , "It's sol in Latin" .)
'celestial object' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for star that I've seen before include "Heavenly body - leading actress?" , "chamber" , "Actor in a principal role" , "Rush" , "Eg, Antares" .)
(Other definitions for planet that I've seen before include "Mercury?" , "Earth, for instance" , "Jupiter is one" , "Is Pluto one?" , "Celestial body orbiting around a star" .)
(Other definitions for black hole that I've seen before include "object in 21 [SPACE] having very strong 20 [GRAVITY]" , "discovered in Calcutta" , "Space left after collapse of a star" , "'Region of space from which nothing can escape (5,4)'" , "Astronomical curiosity" .)