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Questions tagged [sound]

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18
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2answers
4k views

Microphone on Mars

To the best of my knowledge, a microphone has never been sent to Mars. Why is that? We take pictures of Mars, why not sound recordings?
3
votes
0answers
69 views

Did the Apollo astronauts hear any external sounds during a lunar EVA?

Did any sounds resonate through their boots or any part of their environmental suit? Could they hear the folding or rubbing of the material of their suits? Did anything impact their boots that might ...
5
votes
1answer
156 views

Why did the Apollo cabin repressurization valve cause a banging sound?

As portrayed in the movie Apollo 13, Fred Haise tried to spook his crewmates by trigerring the cabin repressurization valve, which creates a banging sound. Indeed, every Apollo crew reported hearing ...
3
votes
0answers
130 views

How much noise would the BFR make at launch?

In addition to multi-planetary travel, SpaceX has plans to use the BFR for intercontinental travel. However, would the sound generated by the BFR's launch disrupt local communities and therefore make ...
4
votes
1answer
164 views

Does a rocket sound louder to the astronauts as it leaves the atmosphere?

Rocket launches are LOUD, even to nearby observers on the ground. However, once in space, the vacuum does not transmit sound, so any sound produced by the engines will be contained to the spacecraft. ...
3
votes
1answer
157 views

Did Voyager 1 and 2 record while not near any planets to get “ambient mechanical noise” for smoothing?

Background: I was looking at a lot of the voyager spectrograms and listening to their sounds and I was honestly starting to wonder whether or not they had any sort of ambient noise negation applied ...
2
votes
0answers
142 views

Did anyone suggest theories on the sounds voyager 1 captured from 2012-2013?

I was watching this on the JPL Youtube channel and it doesn't have much context other than 2 minutes of footage, and cuts to slides with some information, but not a lot of information. I'm wondering ...
4
votes
0answers
100 views

What sort of ambient air density was there when/were Starman/Roadster first started playing Bowie's “Life on Mars”

When the Falcon Heavy test flight 2nd stage fairing opened at about 115 km, David Bowie started singing "Life on Mars". Okay, the Tesla Roadster's stereo started playing "Life on Mars", or at least ...
16
votes
2answers
559 views

What would sounds on Mars be like?

Figure there was a microphone on the surface of Mars, exposed to the atmosphere. If it recorded stuff, how would it sound? E.g. walking through sand, stuff falling down onto rock, a rocket engine, the ...
2
votes
2answers
148 views

Stethoscope as a backup communication device

I'm curious about the use of stethoscopes as a backup communication source. This would be used between two spacecrafts, such as 2 astronauts in spacesuits, and help bridge the vacuum between them. ...
3
votes
2answers
635 views

What is that thing spraying during a Falcon 9 launch? [duplicate]

What are those things spraying something at the pad during the beginning of a Falcon 9 launch?
7
votes
2answers
2k views

Is the Falcon Heavy as loud as the Space Shuttle or Saturn V?

Is the Falcon Heavy Rocket as loud as the older Saturn V and Space Shuttles? I have read that Saturn V and the Space Shuttle were within a few decibels of each other. The newer Shuttle was slightly ...
5
votes
0answers
2k views

How far does the sound of a rocket launch carry?

Having never been to a rocket launch, can you tell me how far the sound carries? I can hear the rumble of F-15 Eagles take off from inside my office building five miles from the airport. An F-15C is ...
6
votes
1answer
407 views

Can astronauts hear sounds during space walks for repairs?

We know there is no sound in space in a vacuum, but when an astronaut is outside on a spacewalk doing repairs, can they hear the tapping when they use a hammer or the sound of a power screwdriver etc.?...
6
votes
1answer
326 views

Where does the noise on spacewalks come from?

ISS astronaut Randy Bresnik recently posted a video on social media from his spacewalk, shot with a GoPro. You can watch his clip here (Embedding the clip didn't work): https://twitter.com/...
14
votes
1answer
534 views

Can astronauts inside ISS hear their crewmates doing EVAs?

I was just watching a video of two astronauts doing an EVA on ISS to install some things. As I saw how they moved around the outside of the ISS using handrails and other things to grab, I was ...
4
votes
1answer
375 views

What are the sounds in this GoPro-in-orbit ISS video?

The video description says: Published on Apr 15, 2015 This footage was taken by U.S. astronaut Terry Virts during a spacewalk on the International Space Station on February 25, 2015. Virts and ...
4
votes
2answers
140 views

Does knocking on walls produce a different sound when adjacent to a vaccum?

If I was to knock on a wall or door between a pressurised room and a vacuum, would that sound different from knocking on a wall or door of the same material between two pressurised rooms? If not, ...
7
votes
2answers
1k views

Why doesn't this SpaceX rocket test fire use water sprays?

I know that rocket launches always have water towers spray water all around when the rocket is launching to suppress the extreme sounds and shockwaves generated by the launch and ensure the rocket ...
3
votes
2answers
136 views

Does gravity affect sound on different mass planets?

Do gravitational forces affect how sound travels? For example would two different planets with similar atmospheres, but greatly differing in gravity make any differences to how sound travels?
-1
votes
1answer
241 views

So if I could shout in space, no one can ever hear me including myself? [closed]

I was just googling on how does radio waves travel in space and stumbled upon this reddit post If sound can't travel through space, how can radio waves? and the idea that sound can't travel in space ...
1
vote
1answer
179 views

There's sound in space? [closed]

Five years ago, a teacher said there's sound in space, called "the music of the space." Is this true or false? I don't think it's true because there's nothing in the void.
4
votes
1answer
172 views

Would a woodwind instrument still play in outer space?

Imagine having a tank of compressed air to feed an organ. Would the pipes still vibrate when played? If so, would the frequency be different? And how many decibels quieter would it sound if you put ...
2
votes
1answer
2k views

Could you hear the sound of your own body in the vacuum of space?

I think the answer to this question probably lies more in biology than astrophysics. If you were in space with an oxygen mask on (ignoring the fact that you will get quite cold for the moment) you ...
12
votes
4answers
3k views

When does an aerobraking space craft create a sonic boom?

There are a lot of variables with the speed of sound, a sonic boom is created when all of those variables meet. the speed of sound, a critical speed known as Mach 1, and is approximately 1,225 km/h ...
7
votes
2answers
308 views

Do processors need to be hardened against vibration?

Rockets are very loud, and seems to have a lot of vibration caused by turbulence. They're also run by microchips, which I tend to think of as fragile. Do the microchips need to be specially designed ...
32
votes
2answers
3k views

Why would NASA include a speaker on Curiosity?

Curiosity celebrated it's first birthday by playing, on Mars, Happy Birthday. How was this accomplished, and why would this capability even be included on Mars?