Space question for astrophysicists.

Space is a vacuum so they say there is no sound. Since sound needs a medium like air to travel, would it get loud if you were floating in a cloud of oxygen or hydrogen, etc?

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NativePortlander1970

Space is not a vacuum, otherwise it would pull everything apart, it's more of a void with objects within it.

GuyWithOpinions · 31-35, M

@NativePortlander1970 it does pull everything apart. Gravity pulls everything together. If there is a hole in your spaceship everything gets sucked out.

Bel6EQUJ5

@GuyWithOpinions Both of you are wrong. Space (the vacuum) doesn't "suck"; the air within the, for example spaceship, escapes, and in a manner analogous to the air in a balloon escaping when you let go of it.

NativePortlander1970

@GuyWithOpinions @Bel6EQUJ5 That happens when a pressurized vessel, including a space suit, escapes into a non pressurized environment. It's called negative pressure and is used in labs and clean room factories.