What sounds do planets make in space? Space music

To the question: sound in space. please explain whether a person will hear his own voice in outer space?)) given by the author Salt the best answer is As we already know, sound waves can only move through substances. And since there are practically no such substances in interstellar space, sound cannot move through this space. The distance between the particles is so great that they will never collide with each other. Therefore, even if you were close to the explosion of a spaceship in this space, you would not hear a sound. From a technical point of view, this statement can be disputed; one can try to prove that a person can still hear sounds in space.
Let's look at this in more detail: As we know, radio waves can travel through space. This means that if you find yourself in space and put on a spacesuit with a radio receiver, then your friend will be able to transmit to you a radio signal that, for example, pizza has been brought to the space station, and you will actually hear it. And you will hear it because radio waves are not mechanical, they are electromagnetic. Electromagnetic waves can transmit energy through a vacuum. Once your radio receives the signal, it converts it into sound that will travel quietly through the air in your spacesuit.
-- let's consider another case: You are flying in space in a spacesuit, and accidentally hit your helmet on a space telescope. According to the idea, as a result of the collision, sound should be heard, since in this case there is a medium for sound waves: the helmet and the air in the spacesuit. But despite this, you will still be surrounded by vacuum, so an independent observer will not hear a sound, even if you bang your head against the satellite many times.
-- imagine that you are an astronaut and you are assigned to perform a certain task.
You decided to go into space, when you suddenly remembered that you forgot to put on your spacesuit. Your face will immediately be pressed against the shuttle, there will be no air left in your ears, so you will not be able to hear anything. However, before the “steel shackles” of space strangle you, you will be able to make out several sounds through bone conduction. In bone conduction, sound waves travel through the bones of the jaw and skull to inner ear, bypassing eardrum. Since there is no need for air in this case, you will hear the conversations of your colleagues in the shuttle for another 15 seconds. After this, you will probably lose consciousness and begin to suffocate.
This all indicates that no matter how sophisticated Hollywood filmmakers try to explain audible sounds in space, all the same, as proven above, a person does not hear anything in space.

And what do we hear in space anyway? Could it be that a person in space would not have heard something rush past him? spacecraft? Did you know that space also has its own weather? And since there are practically no such substances in interstellar space, sound cannot move through this space. Let's look at this in more detail: As we know, radio waves can travel through space.

Once your radio receives the signal, it converts it into sound that will travel quietly through the air in your spacesuit. You're flying in space in a spacesuit, and you accidentally hit your helmet on a space telescope.

You decided to go into space, when you suddenly remembered that you forgot to put on your spacesuit. Your face will immediately be pressed against the shuttle, there will be no air left in your ears, so you will not be able to hear anything. However, before the “steel shackles” of space strangle you, you will be able to make out several sounds through bone conduction.

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Since there is no need for air in this case, you will hear the conversations of your colleagues in the shuttle for another 15 seconds. Perhaps you will hear a minimal sound coming through your own body. However, you won’t be able to create it because it also requires air.

08/09/2008 21:37 of course. It’s all Hollywood directors who are messing with people’s brains with scenes and shots in space. In space it’s impossible to feel speed or sound or anything else!!

To humans - no Sound is periodic pressure fluctuations that propagate in any medium, for example in a gas. For us to hear sound, it must be loud enough. If a person were in interplanetary or interstellar space, he would not hear anything (however, a person, in principle, cannot be there). In modern cinemas, the special effects are simply breathtaking. A person sits in an ordinary chair and truly enjoys watching a new action film, a new science fiction film.

It seems to you that the enemy is pointing a laser at you, and not at the ship in the film, and the chair shakes every now and then, as if “your” spaceship is being attacked from all sides. Everything we see and hear strikes our imagination, and we ourselves become the main characters of this film. However, in most films like " Star wars" and "Star Trek", the sound effects for many of the battle scenes in outer space are simply abundant.

In addition, space flight ordeal for the person himself, because some people in space begin to experience something like seasickness. There are special scientists who make weather forecasts in space. Next we will talk about how sound moves and why a person perceives it.

02.02.2012 00:40Did you go to school at all? There is a technical and physical vacuum

In a vacuum, they can only fly in a straight line if they do not have steering engines. 03/22/2010 22:05 Nya, no, if you look at the universe not as a dark, black ball in which galaxies, planets, asteroids, etc. float. There is a vacuum in your head. If you are interested in what is really happening in space, watch documentaries, not science fiction films. 05/14/2012 10:23 people, does anyone know what happened before the big bang! They say that at that time our universe fit into a small point the size of a pinhead!

Plus there is an interesting “Casimir Effect”, which seems to have been proven, which means a wave effect is possible even in a vacuum, which seems to hint... In its original understanding, the Greek term “cosmos” (order, world order) had a philosophical basis, defining a hypothetical closed vacuum around The Earth is the center of the Universe.

This all indicates that no matter how sophisticated Hollywood filmmakers try to explain audible sounds in space, all the same, as proven above, a person does not hear anything in space.

Are any sounds heard in space? Is there a “voice”, “music” of the cosmos?

No, there are no sounds there. Sound spreads due to the collision of air molecules, which then hit the eardrums, and there is no air in a vacuum, so sound cannot spread, which means there is no music or sounds there.

There is no air under water, but you can hear sounds. Surf and so on vibrate the air, matter and sound is formed. If you exhale in the vacuum of space, then where the air ends there is something the same. Sound is a wave, right? And all sorts of radio waves, etc., propagate in space. Boulders of comets float. Asteroid belts and planets hang. They hang in nothing. In nowhere. If you throw a stone a little and it will fly and fly and nothing can stop it, and in the end it will be attracted to some planet, attracted by gravity. Imagine not a stone but a hammer lying on Mars, an astronaut’s hammer! It’s a pity that there are no sounds in space; you won’t even be able to talk. And there is no air temperature there. There is one in Sochi, but not in space. There is a vacuum there. The endless vacuum of space. And not so far from it, several people live in a vacuum. On space station. Around them is the fragile shell of the station and some air so they can talk to each other. For the soul. But there is no air on Mars. And there is no one to talk to. Therefore there is no life and not a soul there.

No sounds can be heard in space. There's silence there. This is because sound waves do not propagate in space (in a vacuum). But, on the other hand, in space there are a lot of different radio waves that can be converted into sound, although it will be heard as interference, but still. Even the echo of a big explosion can be heard in the form of radio waves. This is probably the very music of the cosmos.

There are no ordinary sound waves in space. since their propagation requires air, that is, some kind of medium capable of ensuring the transmission of a sound wave. Therefore, a person in space will not hear anything with his own ears. However, this does not mean that space is completely silent, because the voices of planets and stars are recorded. It’s just that space is filled to the very top with various radiations, and among them there are so-called ultra-long radio waves, that is, electromagnetic radiation in the sound spectrum. A person still won’t hear such radiation, but it can be caught and recorded, which is what radio astronomers sometimes do.

There is very little gas in space. It is unevenly distributed and, therefore, very discharged. There is the so-called vacuum. Sound cannot be transmitted in a vacuum or in the vacuum of space. Therefore, you won’t hear anything there if you shout, for example.

The most grandiose space disasters, for example, the explosion of a star, pass completely silently, in perfect silence. We can experience the pleasure of hearing sound only on Earth, where there is an atmosphere. And in order for us to hear sounds, in addition to the atmosphere, there is much more that is necessary. Truly, our earthly world, living beings, including us humans, are amazingly structured!

Space is not a homogeneous nothingness. There are clouds of gas and dust between various objects. They are remnants from supernova explosions and the site of star formation. In some areas, this interstellar gas is dense enough to propagate sound waves, but they are imperceptible to human hearing.

Is there sound in space?

When an object moves - be it the vibration of a guitar string or an exploding firework - it affects nearby air molecules, as if pushing them. These molecules crash into their neighbors, and those, in turn, into the next ones. Movement travels through the air like a wave. When it reaches the ear, a person perceives it as sound.

When a sound wave passes through air space, its pressure fluctuates up and down, like sea ​​water in a storm. The time between these vibrations is called the frequency of sound and is measured in hertz (1 Hz is one oscillation per second). Peak spacing highest pressure called wavelength.

Sound can only travel in a medium in which the wavelength is no greater than the average distance between particles. Physicists call this the “conditionally free road” - the average distance that a molecule travels after colliding with one and before interacting with the next. Thus, a dense medium can transmit sounds with a short wavelength and vice versa.

Long wavelength sounds have frequencies that the ear perceives as low tones. In a gas with a mean free path greater than 17 m (20 Hz), the sound waves will be too low frequency for humans to perceive. They are called infrasounds. If there were aliens with ears that could hear very low notes, they would know exactly whether sounds were audible in outer space.

Song of the Black Hole

Some 220 million light years away, at the center of a cluster of thousands of galaxies, hums the deepest note the universe has ever heard. 57 octaves below middle C, which is about a million billion times deeper than the frequency a person can hear.

The deepest sound that humans can detect has a cycle of about one vibration every 1/20 of a second. The black hole in the constellation Perseus has a cycle of about one fluctuation every 10 million years.

This became known in 2003, when NASA's Chandra Space Telescope discovered something in the gas filling the Perseus cluster: concentrated rings of light and darkness, like ripples in a pond. Astrophysicists say these are traces of incredibly low-frequency sound waves. The brighter ones are the tops of the waves, where the pressure on the gas is greatest. The darker rings are depressions where the pressure is lower.

Sound you can see

Hot, magnetized gas swirls around the black hole, similar to water swirling around a drain. As it moves, it creates a powerful electromagnetic field. Strong enough to accelerate gas near the edge of a black hole to almost the speed of light, turning it into huge bursts called relativistic jets. They force the gas to turn sideways on its path, and this effect causes eerie sounds from space.

They are carried through the Perseus cluster hundreds of thousands of light years from their source, but the sound can only travel as far as there is enough gas to carry it. So he stops at the edge of the gas cloud filling Perseus. This means that it is impossible to hear its sound on Earth. You can only see the effect on the gas cloud. It looks like looking through space into a soundproof chamber.

Strange planet

Our planet emits a deep groan every time its crust moves. Then there is no doubt whether sounds travel in space. An earthquake can create vibrations in the atmosphere with a frequency of one to five Hz. If it's strong enough, it can send infrasound waves through the atmosphere into outer space.

Of course, there is no clear boundary where the Earth's atmosphere ends and space begins. The air simply gradually becomes thinner until it eventually disappears altogether. From 80 to 550 kilometers above the Earth's surface, the free path of a molecule is about a kilometer. This means that the air at this altitude is approximately 59 times thinner than at which it would be possible to hear sound. It is only capable of transmitting long infrasonic waves.

When a magnitude 9.0 earthquake rocked Japan's northeast coast in March 2011, seismographs around the world recorded its waves traveling through the Earth, its vibrations causing low-frequency oscillations in the atmosphere. These vibrations travel all the way to where the Gravity Field and stationary satellite Ocean Circulation Explorer (GOCE) compares the Earth's gravity in low orbit to 270 kilometers above the surface. And the satellite managed to record these sound waves.

GOCE has very sensitive accelerometers on board that control the ion thruster. This helps keep the satellite in a stable orbit. GOCE's 2011 accelerometers detected vertical shifts in the very thin atmosphere around the satellite, as well as wave-like shifts in air pressure, as sound waves from the earthquake propagated. The satellite's engines corrected the displacement and stored the data, which became a kind of recording of the infrasound of the earthquake.

This entry was kept secret in the satellite data until a group of scientists led by Rafael F. Garcia published this document.

The first sound in the universe

If it were possible to go back in time, to about the first 760,000 years after the Big Bang, it would be possible to find out whether there was sound in space. At this time, the Universe was so dense that sound waves could travel freely.

Around the same time, the first photons began to travel through space as light. Afterwards, everything finally cooled enough to condense into atoms. Before cooling occurred, the Universe was filled with charged particles - protons and electrons - that absorbed or scattered photons, the particles that make up light.

Today it reaches Earth as a faint glow from the microwave background, visible only to very sensitive radio telescopes. Physicists call this cosmic microwave background radiation. This is the oldest light in the universe. It answers the question of whether there is sound in space. The cosmic microwave background contains a recording of the oldest music in the universe.

Light to the rescue

How does light help us know if there is sound in space? Sound waves travel through air (or interstellar gas) as pressure fluctuations. When gas is compressed, it gets hotter. On a cosmic scale, this phenomenon is so intense that stars are formed. And when the gas expands, it cools. Sound waves traveling through the early universe caused subtle pressure fluctuations in the gaseous environment, which in turn left subtle temperature fluctuations reflected in the cosmic microwave background.

Using temperature changes, University of Washington physicist John Cramer was able to reconstruct those eerie sounds from space - the music of an expanding universe. He multiplied the frequency by 10 26 times so that human ears could hear him.

So no one will actually hear the scream in space, but there will be sound waves moving through clouds of interstellar gas or in the rarefied rays of the Earth's outer atmosphere.