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In space, no one can hear you scream — but it still gets incredibly noisy

Maybe I heard Astronauts Talk to control of the task while performing operations in space. In these RecordingsYou can hear the hidden gossip, as well as breathing the astronaut and background noise into the space suit that pumps oxygen into its helmet to keep it alive. However, if they removed that helmet and broke the barrier of the lawsuit that protects them from outer spaceThis conversation will be cut – and all the sound will be silent on the radio.

Astronomical physicist Neil Diras Tyson once explained on podcasts StartalkSpace pioneers will be able to hear things from within the body itself – like the heartbeat.

And he said in the podcast: “The sound of silence is the sound of things that have always made noise that you have not noticed before.”

The sound waves are vibration that is carried through a type of medium, such as air, water, or in the case of the heartbeat, the body. When these vibrations reach our ears, they send vibration through our eardrum, which is recognized in the brain as a sound.

Since the sound needs something to travel to, it cannot make its way across the vast majority of the space, a vacuum that mainly contains any molecules. The space between the planets contains only a few dozen in each cubic centimeter – compared, the air we breathe contains dozens of molecules per cubic centimeter. (For scale, 10 Quintillions longer than the age of the universe.)

“In the universe, the absolute void is a rare occurrence, and most of the universe is a high -density high -density plasma,” he said. Chris ImpAstronomer at Arizona University. “In principle, the sound can be transmitted through it, but it will have completely different properties of what we are used to.”

“In the universe, the absolute void is rare, and most of the universe is a very high temperature plasma.”

Phil Plate, the astronomer who runs through Bad astronomy Blog. He explained that the structures of many gas clouds, for example, can be formed by sound waves, or shock waves in the event that the materials move faster than the speed of sound.

“We see the sound effects on these objects all the time,” Plait told Salon in an email.

This will not be the same as the sound that we are accustomed to on the ground and will not be discovered by the human ear, which can only hear a very narrow group of frequencies. You may remember the black hole in the Perseus Galaxy Group about 250 million light years away, as NASA discovered the pressure waves emitted in 2003.

Although this was not an audio recording as if you were hearing from a microphone, NASA turned these pressure waves into a sound, although very low of the frequency of the human ear he discovers. Despite what it deserves, they found that the waves correspond to the B-Flat notes, about 57 octaves below the Note Middle C on the piano.

Then, in 2022, the Chandra X -ray Observatory from NASA Sonified this wave In a few voices you can hear the human ear on the 144 quadrillion and 288 quadrillion think from the original. (To learn about the extent of this number, one, one Ticket There is an estimated 20 quadrillion the total ants on the ground.)


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Plate said: “What happens is that the matter surrounds the black hole, and when some things fall, strong winds can be pressed on the surrounding materials, which makes a sound wave.” “We do not discover the same sound, but we can see ripples in the gas and can be converted into a sound we hear.”

There are complete projects dedicated to Data permit from astronomical things. In Cassini’s mission, for example, NASA discovered the radio waves emitted from charged molecules in the magnetic fields, which were Vote. However, these were plasma waves, not sound waves.

However, the sound was discovered within our solar system. During the mission of perseverance in NASA on Mars in 2021, a Rover Microphones discovered a helicopter and noise created by Rover. He also discovered the sounds that occur naturally on this planet itself – including the winds of Mars. Once again in 1981, Russia as well The voices reported on Venus During the Soviet Venera 13 mission, which It looks like waves Hasa on the beach.

However, the sounds on other planets look different from what they do on the ground because other planets have a different atmosphere. On the ground, the unique mixture of oxygen, nitrogen and other gases, along with the effects of gravity and solar heating, creates a certain density of molecules that carry sound as we know it.

On the contrary, the atmosphere on Mars is about 2 % dense like Earth, and its composition is dominated by carbon dioxide. In general, the sounds will be quieter and a little more written, and it will also be Take more time to reach you more than Earth. Some of the upper sounds will be fully unheard.

Interestingly, if you play a member of the church on Mars, the group of chimney tubes that create a sound similar to the flute will rise on the field, but the reed tubes, which produce a sound similar to Corner, will decrease on the field.

It seems that a million years of the universe seem to be “a descending screaming, deep hoax and an increasing final whisper.”

Saturn, TitanMaybe it is closest to the ground. However, the pressure and density is slightly higher in the Earth level, and the speed with which the sound is transmitted across the atmosphere less than the Earth. As a result, many sounds such as sounds, psalms and pipelines will be played in a lower stadium.

On the flower, the sounds resulting from the solid objects that vibrate, such as Harmonicas or Red pipes, will be dropped, because the atmosphere is thick and soup. However, voices of things like chimneys or psalms pipes, which are spread through the air, will be higher than the ground. This is because very hot temperatures on Venus make travel a sound faster than the ground.

In addition, if we theoretically heard a sound like vocal on Venus, our perception of the size of the creature from which he was coming will be a little distorted. This is because human beings developed an evolutionary way to hear the young in which the sound moves to the top of the speaker and return again in a form of resonance, which we use unconsciously to estimate the size of the creature that depends on the tone from which it emanates.

Ali Venus, “This pulse quickly travels to the top of the nose and returns again in a much closer to the ground,” said Lighton Salon in a video call. “Your mind hears it and imagines that the person is about three feet.”

While continuing to explore more distant planets, the registration of scientists can help better understand them. Leiton explained that the measurement of wind sounds on Mars can provide evidence about how the surface of the planet.

“It can tell us a lot about the atmosphere and how it changes with the climb of the sun and down, and how this in turn generates winds to form the surface of Mars,” said Lighton. “This indicates the strength of these microphones.”

Emppe said the sound can also help us explore planets such as Jupiter and Saturn, which is likely to have a lot of sound to hear it but it has thick clouds and uncontrolled conditions that make it difficult to access visually.

“In fact, since the atmosphere is somewhat unforgettable and you cannot really see, this may be a way to sense what is happening better and more efficient than you can with any kind of camera, which will not work well at all,” he told SALON in an interview over the phone.

When searching for the sound in the universe, astronomers also looked back in time. Again in the early years of the universe, hot plasma soup was much more intense. This plasma carries vocal fluctuations, although it is still not in an audible range. However, in one Research projectThe astronomer Mark Whittel has pressured the first million years from the universe to 10 seconds, and moved by 50 octaves so that the human ear could hear it. It seems that “the disputed screaming, a deep hide and a growing sessation.”

After about 400,000 years of the big explosion, the sound waves are called Parion volatile vibrations Torn off through the universe to influence how galaxies are distributed. As such, one can say that life on Earth as we know it somehow originated from a sound wave. The big explosion is not called nothing, after all.

And Whitel wrote in his report: “In this sea of ​​brilliance, the seeds for everything we know now were already present, inherent, waiting to be revealed.” “The most prominent of them is, perhaps these seeds were sounds – pressure waves wandering in the liquid.”

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