In space, no one can hear you scream. This is because there is no air in space – it is a vacuum. Sound waves cannot travel through a vacuum. '
No, you cannot hear any sounds in near-empty regions of space. Sound travels through the vibration of atoms and molecules in a medium (such as air or water). In space, where there is no air, sound has no way to travel.
No, there isn't sound in space.
This is because sound travels through the vibration of particles, and space is a vacuum. On Earth, sound mainly travels to your ears by way of vibrating air molecules, but in near-empty regions of space there are no (or very, very few) particles to vibrate – so no sound.
While space is more silent than you could ever imagine, it's not completely devoid of sound. Sound waves cannot travel through space, but there are some infinitesimally small regions where sound can exist, under very specific conditions.
Sound is a mecanical wave, which means that it needs substance to travel through, such as air or water. In space, there is no air, so sound has nothing to travel through. If someone were to scream in space, the sound wouldn't even leave their mouths.
Thankfully, the internet is available from the space station so astronauts can stay in touch with their loved ones. They use internet-enabled laptops to send emails, make phone calls and even watch movies.
The quietest place on earth, an anechoic chamber at Orfield Laboratories in Minnesota, is so quiet that the longest anybody has been able to bear it is 45 minutes. Inside the room it's silent. So silent that the background noise measured is actually negative decibels, -9.4 dBA.
The crater at Haleakalā National Park has been nicknamed the "quietest place on Earth." In a crater at the top of a dormant volcano lies a place so quiet, the ambient sound is right near the threshold of human hearing. Visitors to the crater say they can hear their own heartbeats.
In fact, the only place in the universe with absolutely no sound is where there is absolutely no mass- which can only be found in a perfect vacuum.
Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space. But nobody knows for sure.
The universe has a bottom. That bottom extends infinitely outward and has an infinite sky above it, with an infinite number of stars and galaxies. The bottom is remarkably terrestrial, with gravity, mountains, lakes, forests, and sunshine, each of which deserves additional discussion.
Experts may not know whether space is infinite, but they do know that the universe is growing. It's been expanding since the Big Bang itself, about 13.8 billion years ago. And scientists recently found that it may be doing so at a faster pace than they previously thought.
We can't smell space directly, because our noses don't work in a vacuum. But astronauts aboard the ISS have reported that they notice a metallic aroma – like the smell of welding fumes – on the surface of their spacesuits once the airlock has re-pressurised.
Because there is nothing out in space (like an atmosphere), the sound waves from one astronaut's whistling can't travel over to the other astronaut's ears. That's why the astronauts use radios to communicate—even if they're floating in space right next to each other!
NASA says there is a misconception that there is no sound in space NASA released a sound from the black hole at the center of the Perseus galaxy cluster. What you'll hear is pressure waves emitted from the black hole causing ripples in the star cluster's hot gas.
Steve Orfield explained: “what the chamber tends to do is it tends to scare people because when you get in the chamber, everything gets tremendously quiet. You feel like there's pressure on your ears – but it's actually pressure moving away from your ears.
The brain creates noise to fill the silence, and we hear this as tinnitus. Perhaps only someone with profound deafness can achieve this level of silence, so paradoxically loud.
Inside the world's quietest room
If you stand in it for long enough, you start to hear your heartbeat. A ringing in your ears becomes deafening. When you move, your bones make a grinding noise. Eventually you lose your balance, because the absolute lack of reverberation sabotages your spatial awareness.
Any sounds below the threshold of 0 dBA is undetectable by the human ear. And at such a low decibal level, the environment becomes so disconcerting that people have actually started to hallucinate. "When it's quiet, ears will adapt. The quieter the room, the more things you hear.
Orfield Laboratories offers tours of our facility focused on its earlier incarnation as Sound 80 Studios "The World's First Digital Recording Studios" and the later addition of our acoustic labs and our world famous Anechoic Chamber, "The Quietest Place on Earth." These tours run from a one and a half hour minimum and ...
Typically, zero decibels sound pressure level (SPL) corresponds to 0.000002 Pascals — a measure of vibration or pressure waves that we really hear. So then, zero decibels is the smallest level of sound our ears can detect!
Average Decibel Level of Human Speech
A whisper is between 20-30 dB. On the other hand, a human scream can reach decibel levels between 80 and 125 dB.
You can even scream so loud that you burst a small blood vessel on your vocal cord and have a vocal fold hemorrhage," outlines Rupali Shah, MD with the UNC Dept. of Otolaryngology. Dr. Shah sees this more often than you might think, as she specializes in voice and swallowing disorders.
Loud noise can damage cells and membranes in the cochlea. Listening to loud noise for a long time can overwork hair cells in the ear, which can cause these cells to die. The hearing loss progresses as long as the exposure continues. Harmful effects might continue even after noise exposure has stopped.