What is difference between space and sky ?

Explanation

(i) Space : The region between the celestial bodies which have difference gases and dust particles , is called space . There are many stars , planets, galaxies present in the space.
(ii) Sky : On a cloudless night , if we observe up above the earth, from an open ground , we can see stars tawinkling on a dark background. What we see beyond the earth's atmosphere with our naked eyes which appers like a ceiling is called the sky.