Question

Explosions on other planets are not heard on earth. Why ?

Answer 1

$\large\color{red}\mathcal{Hello\:Friend}$

This is all because sound needs a medium to travel and in space there is no vacuum so, sound from other planets can't travel to earth.

Answer 2

Answer:

We cannot hear the sound of explosions in space because there is no medium for sound to travel since only vacuum is present in space.