Have you ever wondered how sound gets from the place where it is made and travels to your ears where you hear itSound is not something you can see. This is because sound is a transfer of energy. Is sound the same in outer space as it is on Earth and how do astronauts hear each other?

STEM stands for science technology engineering and mathematics and it is not just for scientists. The existence of the whole Universe including us and our daily lives can all be described with the wonderful scientific facts that make up the topics included in STEM. In this series you will find out how easy STEM is to understand and discover how you can see it in action every second of every day.