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.
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.
Space Environment
So, in order for sound to travel, there has to be something with molecules for it to travel through. On Earth, sound travels to your ears by vibrating air molecules. In deep space, the large empty areas between stars and planets, there are no molecules to vibrate. There is no sound there.
To travel to us from outer space, the wave must be able to travel through regions of space which are essentially vacuum (nothing there). Sound cannot do this, as it requires a medium to propagate in, so we would not be able to hear the explosion.
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.
Other astronauts have described it in similar yet varying ways: "burning metal," "a distinct odor of ozone, an acrid smell," "walnuts and brake pads," "gunpowder" and even "burnt almond cookie." Much like all wine connoisseurs smell something a bit different in the bottle, astronaut reports differ slightly in their " ...
The normal intelligible outdoor range of the male human voice in still air is 180 m (590 ft 6.6 in).
Human screams can be quite loud, possibly exceeding 100 dB (as of March 2019, the world record is 129 dB!)
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.
The loudest sound in the universe definitely comes from black hole mergers. In this case the “sound” comes out in gravitational waves and not ordinary sound waves.
The Loudest Sound, Naturally
The loudest sound in recorded history came from the volcanic eruption on the Indonesian island Krakatoa at 10.02 a.m. on August 27, 1883.
(Photo by NASA/CXC/Columbia Univ./C. Hailey et al.) For the first time in history, earthlings can hear what a black hole sounds like: a low-pitched groaning, as if a very creaky heavy door was being opened again and again.
Practically, we cannot even imagine thinking of the end of space. It is a void where the multiverses lie. Our universe alone is expanding in every direction and covering billions of kilometres within seconds. There is infinite space where such universes roam and there is actually no end.
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.
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.
Classroom assistant Jill Drake (UK) had a scream that reached 129 dBA when measured at the Halloween festivities held in the Millennium Dome, London, UK in October 2000. If playback doesn't begin shortly, try restarting your device.
In general, women speak at a higher pitch—about an octave higher than men. An adult woman's average range is from 165 to 255 Hz, while a man's is 85 to 155 Hz (see sources). Men's voices are generally deeper because the surge of testosterone released during puberty causes their vocal cords to elongate and thicken.
As you might imagine, too much yelling isn't good for your vocal cords. Whether it's too many rock concerts or frustration that needs a healthier outlet, chronic screaming will strain your vocal cords and can damage them over time. Other less-known ways you can damage your vocal cords include: Smoking.
Humans can detect sounds in a frequency range from about 20 Hz to 20 kHz. (Human infants can actually hear frequencies slightly higher than 20 kHz, but lose some high-frequency sensitivity as they mature; the upper limit in average adults is often closer to 15–17 kHz.)
But a few individuals have managed to go much deeper. The world's deepest voice belongs to US singer Tim Storms, who can sing a note at 0.189Hz, or eight octaves below the lowest G note on piano! A note this low can't be heard, only felt.
Screaming proved to be the only one to occupy a wide range of frequencies from 30 to 150 hertz. In comparison, speaking registers at frequencies of about 5 hertz. Screaming, with its high frequencies, is associated with disturbing or aggressive sounds.
Lightning inside of clouds produces ozone—that's the smell that tells you that a storm is on the way. Ozone is made up of three oxygen atoms, and has sort of a light chlorine smell, says Dalton. Some people might describe it as fresh, others as a little sharp.
Mars is made up primarily of iron, magnesium, sulfur, acids and CO2. Humans can't breathe on Mars, which is probably a good thing because it stinks. Based on the make-up of the planet and atmosphere, researchers have concluded that Mars smells like rotten eggs.
The smell is easy to get used to, but you should still avoid the trash and the toilet. Call it the scent of space. There's a persistent "peculiar odor" on board the International Space Station (ISS) that takes a few days to get used to, according to European astronaut Samantha Cristoforetti.