The Earth rotates around it’s own axis. One of the most amazing consequence of this motion is that the sky appears to move around in circle on the celestial sphere – an effect termed as Diurnal Motion which makes the stars to trace concentric circles on the sky once a day. The stars appear to rotate around either the North or the South pole. This motion can be tracked with a time-lapse photograph – using a normal camera with high exposure time – and the result is the amazing artistic picture as shown above.
A video you might find interesting 🙂 –