There is NO dark side of the Moon.
The Moon rotates once every 29 (roughly) days, and all points are eventually exposed to the Sun's rays (with the exception of some deep crater floors at the poles). There IS a far side of the Moon that cannot be seen from Earth because of the fact that the rotation of the Moon is phase-locked to the location of the Earth by tidal forces.
At night on the Moon, because there is negligible atmosphere, stars are clearly visible, better than they are on Earth.