Question

A star explodes in a supernova explosion and creates a beautiful visual sensation. Why don't we hear the sound of that explosion?

Answer 1

1. A star explodes in a supernova explosion and creates a beautiful visual sensation but we cannot hear the sound because it explodes in a vacuum.
2. Sound needs a material medium for its propagation.
3. So, the sound produced during the explosion cannot be heard as it is not getting any medium.