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Author Topic: does space make a sound  (Read 3971 times)

Offline gazza711

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does space make a sound
« on: 11/10/2014 20:31:32 »
I heard that if theres no sound in space,what would it sound like if there wasn't a vacuum.the sound of the sun alone would be deafining!!!!


 

Offline Atomic-S

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Re: does space make a sound
« Reply #1 on: 13/10/2014 05:07:19 »
You are probably right about that; in fact, certain advances in solar astronomy have exploited the principle that within the sun, events cause waves that can be indirectly detected, which has given astronomers a new way of peering into the sun. Of course, at 93,000,000 miles away, it is unclear just what we would hear on Earth if there were some acoustic medium between  here and there.
 

Offline PmbPhy

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Re: does space make a sound
« Reply #2 on: 03/11/2014 23:40:06 »
I heard that if theres no sound in space,what would it sound like if there wasn't a vacuum.the sound of the sun alone would be deafining!!!!
I assume that you mean that the radiation from the sun would disturb the medium it was in causing sound, right? If so then it'd be even more quite than an astronaut in orbit outside his capsule in a space suit. The medium would cause dampening which would reduce the radiation reaching you from what it is now with no medium.
 

Offline evan_au

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Re: does space make a sound
« Reply #3 on: 04/11/2014 09:56:11 »
A low-pressure gas (of which space is an extreme example) conducts sound.

But the gas attenuates higher frequencies; when the interval between collisions of particles in the gas (the mean free path) exceeds the period of the sound, the sound is rapidly attenuated away to nothing.

The density of the solar wind near Earth is so low that it would only propagate extremely low sounds, well below human hearing - and well below any frequency that a human would even feel as an acceleration.

Of course, if you consider a comet or meteorite as a particle moving through the vacuum of space, then it can carry some significantly loud sounds into Earth's atmosphere, as the residents of Chelyabinsk discovered in 2013.

And if you consider a supernova as a blast of extremely high pressure gas, it is able to carry a considerable sound as far as the shock wave travels into interstellar space.
 

Offline CliffordK

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Re: does space make a sound
« Reply #4 on: 04/11/2014 19:59:13 »
The sun doesn't have a solid surface, so as you would approach the sun, the density of the particles would increase, and eventually would reach 1 ATM like Earth (and higher as one gets closer). 

Of course the heat would get to you before you got that close to the sun. 

Deafening?  I don't know.  It may be somewhat like being in an enormous forest fire.  Perhaps add some lightening and thunder.  There are, of course, enormous explosions, flares, and etc which no doubt would create "sound" waves that would travel for some distance, but the sun is also HUGE.

Consider on Earth, there are very few sounds that we can hear more than a couple of miles away.  So, a large flare on the sun may not be heard a few hundred, or a few thousand miles away.

The liquid/gas phase of the sun may transmit sounds better than the solid Earth, but a background activity (white noise) may also dampen the large sounds over time and distance.
 

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Re: does space make a sound
« Reply #4 on: 04/11/2014 19:59:13 »

 

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