Why Isn't There Any Sound in Space?

Why Isn't There Any Sound in Space? In physics, sound is a vibration that propagates as an acoustic wave through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Only acoustic waves that have frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of 17 meters (56 ft) to 1.7 centimeters (0.67 in). Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.
This video used the following article under Creative Commons - CC BY-ND 4.0 DEED: "Why isn’t there any sound in space? An astronomer explains why in space no one can hear you scream" (theconversatio... 217885#:~:text= Sound%20is %20carried%20by%20atoms, sound%20also %20means %20no%20echo.) Chris Impey, University Distinguished Professor of Astronomy, University of Arizona (Published: December 3, 2023); slight stylistic modifications to original text.

[@anna536B]

Dzień dobry. Fajny film. Miłego dnia życzę. 😊

[@MindTravelsChannel]

Thanks very much -- have a great day too!

[@Linda-u7t]

Very interesting video. I learned a lot about space and sound.

[@lindab4185]

So, there can be sound in space -- didn't know that.