Submitted by full_hammer t3_10eku2h in askscience
Plane_Pea5434 t1_j4u08ws wrote
The energy dissipates in other forms, if you yell (assuming no spacesuit) the air will just go out and keep travelling trough space, if you do have a suit the the vibrations will eventually become heat that will be radiated in to the vacuum, remember that sound is how we perceive the movement of the air and not exactly a kind of energy
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