The word(s) "space" appears 3 time(s) in 3 verse(s) in Quran in Mohsin Khan translation.

(1) And you would have thought them awake, whereas they were asleep. And We turned them on their right and on their left sides, and their dog stretching forth his two forelegs at the entrance [of the Cave or in the space near to the entrance of the Cave (as a guard at the gate)]. Had you looked at them, you would certainly have turned back from them in flight, and would certainly have been filled with awe of them.

(2) He manages and regulates (every) affair from the heavens to the earth; then it (affair) will go up to Him, in one Day, the space whereof is a thousand years of your reckoning (i.e. reckoning of our present world's time).

(3) With power did We construct the heaven. Verily, We are Able to extend the vastness of space thereof.