Question

An astronaut is moving in space when a big explosion occurs about 50 metres BEHIND him. How will the astronaut come to know about the explosion?

Answer 1

The matter from the explosion can reach him, hitting him. He should be able to feel that.

Answer 2

Answer:

The particles from the explosion will hit him, create holes in his space suit, and can also hurt him. By feeling all these things, he will know about the explosion.

Explanation:

Explosion happened behind him so, he wouldn’t be able to see it. Moreover, Sound needs a medium to travel but, in space there is no medium. So, we would not able to listen the sound of explosion. Hence, he will feel the explosion when particles from explosion will hit him and hurt him.