There is almost no sound in most of space, but the universe isn’t completely silent.

The super-short answer

  • In the empty vacuum between stars and galaxies, there’s effectively no sound because there’s almost no matter to carry it.
  • In places where there is gas or plasma (planet atmospheres, nebulae, galaxy clusters), pressure waves can act like sound waves – usually at pitches humans could never hear.

How sound actually works

Sound is just vibrations moving through a medium.

  • On Earth, sound travels because air molecules bump into each other, carrying pressure waves from a source (like your vocal cords) to your ears.
  • In space, the density of matter is so low that there are not enough particles to pass those vibrations along in the usual way.
  • Result: if you were floating outside a ship in deep space, you wouldn’t hear explosions, engines, or lasers – just your own breathing and equipment inside your suit.

A simple way to picture it:

Imagine trying to make a “wave” in a stadium with only three people scattered across 50,000 seats.
There just aren’t enough people to pass the wave along – that’s what deep space is like for sound.

So is space totally silent?

Not quite. The key is: sound needs some material, and space isn’t a perfect vacuum.

Places sound can exist

  1. Inside spaceships and space stations
    • There’s air inside, so astronauts hear fans, pumps, voices – all the normal noises.
  1. Planetary atmospheres and gas giants
    • On worlds with air, winds, thunder, and even quakes could produce sound, though it may travel differently than on Earth.
  1. Gas clouds, plasma, and galaxy clusters
    • In giant clouds of gas or hot plasma, pressure waves can ripple through like ultra-deep “notes.”
 * The Perseus galaxy cluster, for example, carries waves from a supermassive black hole that correspond to a tone **57 octaves below middle C** – way beyond human hearing.
  1. Very low-frequency “sounds”
    • In the thin gas between galaxies, only enormous, energetic events (like exploding stars) can shove enough particles around to create large-scale pressure waves.
 * These “sounds” are so low and spread out that one wave can take millions of years to pass.

Why movies and shows still have sound in space

You’ve probably noticed that space battles in movies are full of booms and rumbles. That’s artistic choice, not physics.

  • Creators often deliberately add sound in vacuum scenes because total silence feels flat or confusing to viewers.
  • Some realistic shows cheat a bit:
    • They might only play sounds from the perspective of someone inside a ship (you hear thumps from inside, not explosions outside).
* Or they treat sound as “for the audience only,” like a dramatic soundtrack layered over silent events.

Forum and fan discussions often point out that:

“There is no sound in space” is true for characters in that vacuum, but not necessarily for what the audience hears as added audio.

How scientists “listen” to space

Even when we can’t hear space directly, scientists have clever ways to turn cosmic data into sound-like experiences.

  1. Sonification (turning data into sound)
    • Telescopes record light (X-ray, visible, radio) and other signals, then software maps these into pitches and volumes.
 * NASA has released “sounds” of nebulae and galaxy clusters by translating brightness or position into musical notes.
  1. Black hole and galaxy cluster audio
    • The famous “black hole sound” from the Perseus cluster comes from real pressure waves in the cluster’s hot gas, shifted upward by many octaves to make them audible.
  1. Gravitational waves as chirps
    • When black holes or neutron stars merge, detectors record tiny spacetime ripples that can be converted into rising “chirps.”

These aren’t sounds traveling through empty space to our ears; they’re data translated into sound so humans can interpret them more easily.

Different viewpoints in the current discussion

Because this keeps popping up in news, forums, and videos, you’ll see a few recurring takes:

  • Strict physics view
    • “There is no sound in space” means: in true vacuum, there’s no medium, so no sound waves like we experience in air.
  • Nuanced science view
    • Space is mostly vacuum, but not perfectly empty; sound-like pressure waves do exist in certain regions (gas clouds, plasma, clusters) – just at scales and frequencies humans can’t hear.
  • Pop culture / media view
    • Movies and shows use sound in space as a storytelling tool, even when they know it’s inaccurate, to keep the action engaging.

This mix of views is part of why “is there sound in space” keeps trending as a discussion topic.

Quick fact list

  • Sound needs a medium like air, water, gas, or plasma.
  • Deep space between stars and galaxies: effectively silent for human-style sound.
  • Inside ships, planets’ atmospheres, and dense gas clouds: sound or sound-like waves can propagate.
  • Galaxy clusters can carry ultra-low “notes” from black hole-driven pressure waves, far below human hearing.
  • Many “space sounds” online are sonifications: data turned into audio, not recordings of air vibrations in a vacuum.

TL;DR

“Is there sound in space?”

  • Between stars and galaxies: for humans, no – it’s effectively silent because there’s no air to carry sound.
  • In gas, plasma, and atmospheres: yes, pressure waves can exist, but usually at extreme scales and pitches we can’t hear directly.

Information gathered from public forums or data available on the internet and portrayed here.