Particles in gases are very far apart and there is a negligible amount of attraction force between these particles. Gas molecules have to move a long way before they interact and collide with other molecules. Sound energy slows down and does not move face when the molecules are not in contact with each other.
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Air because sound travels fastest in solids, medium in liquids, and slow in gases
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Since the moon has little to no atmosphere, sound cannot move as it has no medium to travel thru.
There are different types of glass so there is not a single answer. The speed of sound is approx 4,000 metres per second ( range 3500 - 4500 ms^-1).
Mach is the speed of an object expressed as a multiple of the speed of sound in the same medium. Thus, an object travelling at 686 metres per second through air, at sea level, is travelling at Mach 2 because sound would travel through it at 343 m/s. However, it the object was travelling under water at the same speed then it would be travelling at approx Mach 0.46 since sound travels at 1484 m/s through water.