Space is not completely silent — but you could not hear it.

Wacky WorldScience

Sound needs a medium such as air to travel. Space has so few particles that sound waves cannot travel between them in a way your ears could detect, so an explosion next to you in space would be silent.

Another wacky fact → All facts

Explore more Science facts

Bananas are berries — strawberries are not.Diamonds and pencil “lead” are made of the same element.A day on Mars is only about 40 minutes longer than a day on Earth.