Space, universe (6)
I believe the answer is:
cosmos
I believe this clue is a double definition.
'space' is the first definition.
(I know that space can be written as cosmos)
'universe' is the second definition.
(I know that universe can be written as cosmos)
(Other definitions for cosmos that I've seen before include "The entire universe." , "Universe as an ordered system" , "The universe - a daisy" , "Universe as an ordered whole" , "The universe, whole of creation" .)