Question

Is it possible for astronauts to hear each other on the surface of the moon?

Answer 1

1. Sound propagates in the form of a wave. And it requires a medium for its propagation.
2. Sound can not travel in space or vacuum as there is the absence of a medium or atmosphere.
3. On the moon, there is no atmosphere. Therefore the sound can not be heard on the surface of the moon.
4. That is why it is not possible for the astronauts to hear each other on the surface of the moon.