Why Can’t We Hear Sounds In Space?

On Earth there is air all around us.  Gases like Oxygen, Carbon Dioxide, Hydrogen, Nitrogen float all around us.  When we make a sound, waves travel through the air, all the way to our ea


In space there is no air so when we make a sound the sound waves can’t travel through the air to our ears.

Astronauts in space use radios inside their helmets to communicate with each other.