The content discusses the fundamentals of acoustics, focusing on sound refraction, the anatomy of the ear, and how sound waves are perceived. It explains how sound travels through the ear, the ...

Sound needs a medium (solid, liquid, or gas) to travel. Space is a vacuum, lacking the matter to carry sound waves. No sound in space means no echoes. While a near-perfect vacuum, some sounds can be ...

Chris Impey receives funding from the National Science Foundation. Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...