If we (humans) and light can travel freely through the vacuum of space, then why does sound need a medium to travel through something and can’t travel in space?
In: Physics
Because sound isn’t a thing. You’re made of water and carbon and a bunch of other things, and those things can be physically placed in space.
Light is made of photons. Photons are weird, but they’re there.
Sound isn’t *stuff*. It’s not made of anything. What we call sound is really just vibrations in stuff. So sound can travel through stuff (if you make something vibrate, the vibrations will spread out through that something), but it can’t travel through an absence of stuff. In space, there’s nothing to vibrate.
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