Question

Why the sky looks dark on the moon​

Answer 1

Answer:

The Moon's atmosphere is negligibly thin, essentially vacuum, so its sky is always black, as in the case of Mercury. However, the Sun is so bright that it is impossible to see stars during the daytime, unless the observer is well shielded from sunlight (direct or reflected from the ground).

Answer 2

The Moon's atmosphere is negligibly thin, essentially vacuum, so its sky is always black