Previous in Forum: More Relativity - Absolute Rest?   Next in Forum: starting a business, maybe as 501c
Close
Close
Close
54 comments
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Popular Science - Weaponology - New Member Hobbies - Target Shooting - New Member Safety - ESD - New Member Technical Fields - Education - New Member

Join Date: Mar 2007
Location: Texas
Posts: 636
Good Answers: 20

Interesting Question: The Human Body Out In Space?

04/20/2007 9:46 AM

I had a prof. ask how long it would take for a person to loose all their heat energy in space. of course, we all know zero degrees kelvin is not easily reached, so the question was poorly worded. I also had another prof. claim that a person's blood would boil in space. since then I have learned otherwise, however I found it interesting that a professor would be so far behind the curve. so, I was wondering, how many of us out there still hold onto the boiling blood story?

So, here's my question: if, while in space (geo-stationary earth orbit) you jump ship in naught but your boxers, what happens?

-A-

__________________
question everything
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Guru
Canada - Member - Our strength is our diversity

Join Date: Jan 2007
Location: Canada
Posts: 1024
Good Answers: 40
#1

Re: interesting question?

04/20/2007 10:06 AM

The bends, suffocation and a real bad sun burn.

__________________
Perfection is a subjective and abstract concept.
Register to Reply
Guru
Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: El Lago, Texas, USA
Posts: 2640
Good Answers: 65
#2

Re: interesting question?

04/20/2007 10:32 AM

Pop goes the weasel.

Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#3
In reply to #2

Re: interesting question?

04/20/2007 11:50 PM

Right.

Register to Reply
Guru

Join Date: Dec 2005
Location: Etats Unis
Posts: 1871
Good Answers: 45
#4

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 3:10 AM

Well I really don't know but think about the fact that your body is pushing back on the atmosphere at ~14lbs per square inch over every square inch of your skin. If you suddenly release the hundreds of pounds of pressure pressing in on you, I have the sense that this constitutes a catastrophic event of the inflating kind. I'll go with pop goes the weasel.

__________________
The hardest thing to overcome, is not knowing that you don't know.
Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#5

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 3:27 AM

Geostationary orbit is a long way off being in a vacuum ,but I don't know how elastic eye-balls are . Something will get you , but I don't think it's the fashion police or the Doug Quaid experience.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#7
In reply to #5

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 7:38 AM

We may not notice it directly until we are de-pressurised, but our osmotic pressure inside the body is some 300 kg/cm when compared to absolute vacuum. We may call it millibar this or atmosphere that - at sea-level, but just try to reverse that pressure from inside-out, and - Pop!

Register to Reply
Power-User

Join Date: Feb 2007
Location: Aberdeen, Scotland
Posts: 392
Good Answers: 21
#6

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 5:00 AM

I seem to remember Ripley in Alien opened a hatch to suck out an alien from her spaceship and she was just a little out of breath afterwards. Then again she is pretty tough.

Was just wondering why you would keep your boxers on anyway. All that would happen is you'd soil them at a very alarming rate then, if they float off to a distant galaxy where aliens find them with your name written inside, you'll go down in their history as mister smelly pants.

I would definetly go commando and get a bigger audience for my last dance.

Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#8
In reply to #6

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 7:44 AM

MACA, you just bought me cheap.

May I invite you to my secret society?

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#9
In reply to #8

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 8:30 AM

Don't fall for it MACA , he may ask you to roll up a trouser leg and wait inside an ante-room that bears a striking resemblance to a pressure chamber. Remember the Baboon in the remake of The Fly (the end is the same as far as you need be concerned)

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#10
In reply to #9

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 8:42 AM

Kris, you goblin. I was just making friends with a newcomer who's style I dig. I thought science is all about the right kind of show-biz.

Was I wrong?

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#11
In reply to #10

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 9:12 AM

MACA , sign up ! It's the greatest show on earth . Engineering , Science , Humour galore. MACA's humour qualifies well , I will keep an eye out for postings (as I do for all) . I have to dash soon , so you may be goblin-free for a (brief) while.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru
Australia - Member - New Member Fans of Old Computers - H316 - New Member Hobbies - Model Rocketry - New Member

Join Date: Jun 2006
Location: Port Noarlunga, South Australia, AUSTRALIA (South of Adelaide)
Posts: 3051
Good Answers: 75
#12

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 3:30 PM

Getting back to the initial question of bailing out of your spacecraft wearing only a pair of boxers.

First off if you aren't breathing out at the time you will rupture the alveoli in you lungs and this is normally fatal but lets for the time being assume that you knew to breath out throughout the entire decompression process.

The first problem you are going to face, as techno indicated, is the bends. Any dissolved gasses that are in the blood will come out of solution and form bubbles that will more than likely cause a massive heart attack and a stroke.

Next up water can't exist in a liquid state in a vacuum so off all the water that is in the blood vessels near the surface of your skin and in you lungs will vaporize and try and escape by tearing your skin and the alveoli in your lungs apart. On the sunward side of your body this vaporization of water will continue however on the shaded side you will quickly freeze.

The capillaries in your eyes would definitely burst and turn the whites of your eyes red. If you survived they would ultimately turn a horrible dark purple colour. The gas that is in solution inside your eyes will come out of solution but I doubt that this would actually cause a great enough pressure difference to rupture your eyeballs. Eyeballs are very tough but at any rate the water in your tears would turn to vapor.

If your Eustachian tubes remained open and clear for long enough your ear drums would not burst but the blood vessels in the ear drum and all through the middle ear would rupture and you would hemorrhage into the middle ear, ear canal and nose. Next the fluid in the inner ear would release the dissolved gasses and this would rupture the inner ear drum and cause it to drain into the middle ear.

So where are we now, the blood is full of bubbles that more than likely have stopped blood flowing to the brain and heart, you lungs have been ripped to shreds and are filling with blood, you are bleeding and loosing water through your skin, your ears, sense of balance are completely kaput, your eyes are bleeding and there are bubbles of gas floating around inside them plus you would have let rip with the biggest fart and have the worst case of diarrhea of all times. I'm not sure about the bladder and kidneys as the muscles here are somewhat stronger but it wouldn't be long before they vented themselves as well.

As the internal pressure dropped the water in your blood would vaporize and find some way of either exiting the body or solidifying due to the cold of space.

Ultimately you will end up as a burnt up freeze dried lump of fatty acids and various crystallized salts.

I don't know how long you would remain conscience but I would expect it would be pretty painful till the available oxygen in the blood dropped to a level that could either induce euphoria or unconsciousness.

Without a pressure suit the maximum altitude that a human being can tolerate is about 50,000 feet. Above that you just can't survive even if you are breathing pure oxygen and have something to keep you from freezing.

__________________
An elephant is a mouse built to government specifications.
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#13
In reply to #12

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 5:25 PM

Masu, this was more than I could take in one go.

I'll look into it, sentence a-day, having my favourite drug at hand, just to keep me going.

Wow.

Register to Reply
Power-User

Join Date: Sep 2006
Posts: 128
Good Answers: 1
#14
In reply to #12

Re: Interesting Question: The Human Body Out In Space?

04/21/2007 10:22 PM

Have you ever stepped on one of those mushroom puff balls, and seen it explode into a cloud of "smoke"? I think that is what a human body would do if it were suddenly thrust into "total vacuum". Think of the pressure inside one's body that resists the atmosphereis pressure on Earth;s surface. Do you mean to tell me that no one has ever rigged an experiment with a mouse or similar, wherein the creature was contained inside a glass (or similar) structure, inside a large vacuum chamber, and the glass suddenly was broken, thrusting the creature into a near- absolute vacuum? I doubt that the next few seconds of the creature's life would be very pleasant to watch.

Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#17
In reply to #14

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 2:30 AM

...Do you mean to tell me that no one has ever rigged an experiment with a mouse or similar...

They also said that there is no impregnation-barrier between man and a chimp, having 98% or more of a common DNA.

Do you mean to tell me that no one has ever rigged an experiment with a...

Well, maybe they did. Do you reckon they'd tell us about it?

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#18
In reply to #17

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 3:20 AM

Here's a thought . If a Coelacanth is trawled up why don't it's eyeballs explode ? - it dies slowly.

I'd say it's pretty much certain a lot of creatures have been on a one-way trip to a vacuum chamber - the results were just too nasty to show us all. When early space missions with animals were unable to return , just how did they die (I don't think there would be much hesitation to try one last experiment).

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#19
In reply to #18

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 3:44 AM

...I don't think there would be much hesitation to try one last experiment...

Hopefully not a collective one, straight from my nightmares

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#20
In reply to #19

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 3:51 AM

Things just slip out don't they !Boy do I feel

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#21
In reply to #20

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 3:56 AM

Yeah... I cannot hide my deepest fears, nor do I want to. After all, what the heck

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#22
In reply to #21

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 3:57 AM

me too - I meant I hadnt zipped up this morning and the metal chair gets kinda hot.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#16
In reply to #12

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 1:39 AM

-A- was specific about geostationary orbit , which is not total vacuum . I'm sure your excellent description is right masu, but what is the relevant data for vapour pressure in the posited situation ?. This all reads a bit like one of those 'I told you so' Challenge Questions , which need nailing with numbers.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 30337
Good Answers: 818
#25
In reply to #12

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 5:37 AM

...plus the contents of the alimentary canal would expand...

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#26
In reply to #25

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 5:50 AM

.... and we'd all be talking....

Back to work I think.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Associate
Canada - Member - Hey buddy

Join Date: Sep 2006
Location: In my UFO...hovering above Canada
Posts: 41
#15

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 1:22 AM

I'd be willing to try it for fifty bucks!

Register to Reply
Anonymous Poster
#23
In reply to #15

Re: Interesting Question: The Human Body Out In Space?

04/22/2007 9:09 PM

hey no fair

your parents were aliens

just waiting to be abducted

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#24
In reply to #15

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 5:13 AM

Strappin' big young uns eah ? ( You lead me to one of the funniest things I've read on cr4 ) Near spliced me mainbrace .

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Popular Science - Weaponology - New Member Hobbies - Target Shooting - New Member Safety - ESD - New Member Technical Fields - Education - New Member

Join Date: Mar 2007
Location: Texas
Posts: 636
Good Answers: 20
#27

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 3:37 PM

This is what I could find on-line.

Explosive decompression: Misunderstandings of the meaning of the words are quite likely to be a fueling factor for a persistent myth that humans would explode if exposed to the non-pressure of space. Accidents in space exploration research and high-altitude aviation have shown that while vacuum exposure causes swelling, human skin is tough enough to handle a drop of one atm. A sudden drop of eight atm in the Byford Dolphin accident had intensely fatal results.

If I understand what has been researched so far, it looks like our space walker would pass out after about 14 seconds, however he could "live" up to two minutes on the outside before being permanently killed by the lack of o2. With the proviso that we are still talking about a 1 bar drop. I don't think I'll sleep tonight after reading about the 8 bar drop accident.

-A-

__________________
question everything
Register to Reply
Guru
Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: El Lago, Texas, USA
Posts: 2640
Good Answers: 65
#28
In reply to #27

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 3:50 PM

An expert opinion (because they did it once):


http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970603.html

Register to Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Popular Science - Weaponology - New Member Hobbies - Target Shooting - New Member Safety - ESD - New Member Technical Fields - Education - New Member

Join Date: Mar 2007
Location: Texas
Posts: 636
Good Answers: 20
#29
In reply to #28

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 4:08 PM

That is right in line with what I had understood. It seems the first answer was the best. the bends and a sunburn. still, it doesn't sound fun.

-A-

__________________
question everything
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#30
In reply to #27

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 4:11 PM

Let me see if I understand what you suggest here:

...he could "live" up to two minutes on the outside before being permanently killed by the lack of o2... in space, right?

According to your description and my understanding, the poor creature Will outlive his fragmented body by two minutes, and only then "permanently" killed, only because of the lack of o2, as opposed to my own, or common understanding, that he would first explode and die simultaneously, by the lack of functioning organs, and only then miss some o2 or air for that matter, as if...

Hmmm...

Wiki calls it "Fallacies", as you quoted (you didn't have to copy their links we know what urban legend and humans are), but at least allow me to protest here, dear wiki, this sounds ridiculous

I guess they followed the assumption that since a human with his mouth and rear-end exposed to the environment, cannot decompress, allow me to take this opportunity to remind you that the rest of him is enclosed indeed, quite hermetically, and may indeed explosively decompress.

Is it heresy to disagree with the holy wiki?

Register to Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Popular Science - Weaponology - New Member Hobbies - Target Shooting - New Member Safety - ESD - New Member Technical Fields - Education - New Member

Join Date: Mar 2007
Location: Texas
Posts: 636
Good Answers: 20
#31
In reply to #30

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 4:18 PM

I am not the expert. however, according to NASA in a post from mr. bhankiii:

http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970603.html

as follows:

"Various minor problems (sunburn, possibly "the bends", certainly some [mild, reversible, painless] swelling of skin and underlying tissue) start after ten seconds or so. At some point you lose consciousness from lack of oxygen. Injuries accumulate. After perhaps one or two minutes, you're dying. The limits are not really known.

You do not explode and your blood does not boil because of the containing effect of your skin and circulatory system. You do not instantly freeze because, although the space environment is typically very cold, heat does not transfer away from a body quickly. Loss of consciousness occurs only after the body has depleted the supply of oxygen in the blood. If your skin is exposed to direct sunlight without any protection from its intense ultraviolet radiation, you can get a very bad sunburn."

-A-

__________________
question everything
Register to Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Popular Science - Weaponology - New Member Hobbies - Target Shooting - New Member Safety - ESD - New Member Technical Fields - Education - New Member

Join Date: Mar 2007
Location: Texas
Posts: 636
Good Answers: 20
#32
In reply to #31

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 4:22 PM

as to anyone's "common understanding." much of the world's "common understanding" is commonly wrong. I have found this to be true for all of human history.

question everything.

-A-

__________________
question everything
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#33
In reply to #31

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 4:49 PM

At you suggestion I followed bhankiii's link, ,only to find there another link which turns the story, and somewhat shifts the earlier mentioned consequences:

...There will be virtually no effective circulation of blood. After an initial rush of gas from the lungs during decompression, gas and water vapor will continue to flow outward through the airways. This continual evaporation of water will cool the mouth and nose to near-freezing temperatures...Note that this discussion covers the effect of vacuum exposure only...The decompression event itself can have disasterous effects if the person being decompressed makes the mistake of trying to hold his or her breath. This will result in rupturing of the lungs, with almost certainly fatal results. There is a good reason that it is called "explosive" decompression...

With the author, Geoffrey A. Landis, being both scientist and science-fiction writer, I was now even more troubled than before taken to this quote. Could the fact that sea-level pressurised hermetically enclosed organs of the human body, to negate their "explosive" potential, only by the fact of the digestive system opened at both ends, escaped him?

I wonder.

Can anyone satisfy this doubt here, if only to clarify? what is it, which allows the inner, sealed, organs to escape explosion? Elasticity of skin and tissue? To what degree can this go on until explosion is inevitable? Or is it? Will it inflate forever? What?

Register to Reply
Power-User

Join Date: Sep 2006
Posts: 128
Good Answers: 1
#34
In reply to #33

Re: Interesting Question: The Human Body Out In Space?

04/23/2007 7:03 PM

Interesting post. I think, in the end, complete exposure of a body to outser space is sort of like the man falling from 5,000 feet when his parachute doesn't open. It doesn't matter whether its the fall that kills him, or the sudden stop. The end result is the same!

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#35
In reply to #33

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 2:41 AM

Following links to exreme becomes like a cartoon I saw once. The caption was " Your problem is obvious " , and the picture was of a man in a yoga type contortion with his head up his own arse.

I think the lesson may be 'enjoy the contortion , but don't expect too much of the end result'.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#39
In reply to #35

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 11:43 AM

I don't know. Somehow, I cannot vision 300 kg/scm forcing out of man's sealed tissues without the explosive effect, no-matter-what the honorable Geoffrey A. Landis may try to convince, or the wiki bible may preach according to his wishful thinking.

Something inside just wouldn't take it hands-down. You may consider it 'taken for granted' because wiki said so, especially when we're comforted by -A- that, yes, the poor astronaut would die anyway although not kept intact, but I wouldn't. You may condemn or ridicule me all you like. It wouldn't wash.

If you want to convince me otherwise, you're welcome: either show me a reliable experiment, or answer my doubts. I cannot see other way to confront some nonsense just be it coming from someone in NASA. Sorry. With all due respect, It doesn't wash.

True, my problem is obvious.

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#40
In reply to #39

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 12:09 PM

I don't think I referred to Wiki - Even I am not so mad as to trust a resource like that. My final verdict on the 'exploding man' is not fixed . I am just argumentative.

I would never ridicule you Yuval , especially since my current vision has you positioned 'hands-down ' - and I'm sure you're not facing mecca.

The facts on this will be argued ad-infinitum until a volunteer is found for the test. When my time comes , you may nominate my corpse .I will not complain.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#41
In reply to #40

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 12:22 PM

...until a volunteer is found for the test...

Not only this can be easily simulated with plastics or kadabras, I think it should be done, if only to stop this silly notion, not to mention it is seriously long overdue, ever since the mid sixties.

As if no one ever cared of the outcome, or as if it is evidently clear, that the astronaut will survive for two minutes completely dismembered. You pick your favorite.

Or as with the otherwise mentioned chimp-man issue, no one dared to let us know.

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#42
In reply to #41

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 12:38 PM

Do you mean cadavars ? If so , I agree it shoud be tried. It would be the most watched clip on Utube that's for sure.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#43
In reply to #42

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 12:49 PM

If and when proven wrong, I will be surprised, but will humbly stand corrected.

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#44
In reply to #43

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 5:45 PM

Let me make sure I have this clear Yuval. You favour the spectacular explosive result of sudden ejection into space at geostationary orbit height , yes ?

I imagine a slower less spectacular death , resulting in a stream of bodily fluids leaving it's orifices (causing the body to move like an out out of control jet powered something or other ).Some degree of bloating is expected.

I shall need to humbly sit whilst corrected as I will be laughing too much to stand either way.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#46
In reply to #44

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 5:39 AM

What's clear in advance is this: fluids at sea-level are likely to evaporate and thus expand ,in vacuum, although dependent on temperature, to the expansion. Gases, in general, the same, only more violently so.

Don't confuse those with liquids and gases floating about in "zero"gravity, yet, within pressurised cabins

My "favor" to the explosive has to do with those liquids and gases sealed, confined in porous tissues within.

...Some degree of bloating is expected... Right, again, forever? while still alive?

Register to Reply
Guru

Join Date: Apr 2007
Location: Buenos Aires, Argentina
Posts: 1680
Good Answers: 33
#45
In reply to #31

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 8:47 PM

HMMM ... I do not agree with you: intact skin will not prevent blood from boiling: ask what happens to divers when they do not decompress while ascending to surface!

__________________
the more I move, the deeper I get stuck !
Register to Reply
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 30337
Good Answers: 818
#36
In reply to #27

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 3:35 AM

...permanently killed...

Is there any other way?

__________________
"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#37
In reply to #36

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 3:43 AM

It may be an allusion to the finer points of what death is - brain death can mean different things to different people. I am certainly beginning to feel some form of it.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru
United States - Member - New Member Engineering Fields - Mechanical Engineering - New Member Popular Science - Weaponology - New Member Hobbies - Target Shooting - New Member Safety - ESD - New Member Technical Fields - Education - New Member

Join Date: Mar 2007
Location: Texas
Posts: 636
Good Answers: 20
#38
In reply to #37

Re: Interesting Question: The Human Body Out In Space?

04/24/2007 8:20 AM

same here. I believe the question has been sufficiently addressed, and I am now ready to get back to work.

thanks to all,

-A-

__________________
question everything
Register to Reply
Guru
Australia - Member - New Member Fans of Old Computers - H316 - New Member Hobbies - Model Rocketry - New Member

Join Date: Jun 2006
Location: Port Noarlunga, South Australia, AUSTRALIA (South of Adelaide)
Posts: 3051
Good Answers: 75
#47
In reply to #38

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 7:29 AM

Just a couple of things to add.

The NASA data talks about what happens when the body is contained within a tightly fitting pressure suit that prevents the expansion of the soft tissue. We were talking about a victim in a pair of boxer shorts, so we need to extend what is happening in the lungs and mouth to the rest of the body.

There is another thing that may cause you to expire extremely rapidly and that is the formation of a bubble in the arteries supplying blood to the brain. Depending on exactly where and how large the bubbles of gas that form when the body decompresses, loss of consciousness and irreparable brain damage could be almost instantaneous. This is pretty much the luck of the draw and I don't think there is any way to reliably predict what will happen on this front. The damage may be to an area of the brain that is not important and cause relative little change, but, it may be to a critical area and cause death instantly.

Finally there may be some problems with the eyes as the pressure drops. The tears will certainly boil in the same way the saliva in mouth did and there will certainly be bubbles of gas forming within the fluid in the eye. The capillaries on the surface of the eyes where they are exposed to the vacuum may also rupture.

I have had personal experience with the capillaries in the whites of the eyes rupturing. I had been free diving to depths of about 10 m and without thinking flew in a commercial aircraft the same day. Free driving is different to SCUBA diving in that the pressure in the mask, ears, respiratory tract and sinus cavities are not equalized with the water pressure by the SCUBA regulating valve. As a result the mask is pressed against the face and the sinus cavities, ears and respiratory tracts are squeezed by the surrounding water. This can damage the tiny capillaries in these areas and the damage may not be immediately visible, but rather, weaken them and make them more susceptible to later injury.

The cabin pressure of an airliner is kept at a pressure equivalent of about 8,000 to 10,000 feet and unfortunately this pressure drop was enough to cause the damaged capillaries in my sinuses and the whites of my eyes to rupture. Whilst this is not terribly painful it can be somewhat messy and disconcerting to fellow passengers. The part where the whites of your eyes turn a delightful shade of blood red seem to be the most disturbing, but it gets worse, because over the next few hours they go from red to a delightful shade of purple. Fortunately for me there was no permanent damage and everything settled down but it did mean wearing dark glasses at all times, to prevent anybody that you were talking to from freaking out. It did have one advantage though, if you ever wanted to get out of a conversation with some dimwit that was really boring you to death, taking the dark glasses of would cause a complete cessation in the drivel and a hasty exit of the dimwit.

Whilst the total pressure difference here is greater than you would have with complete depressurization, it did happen over several hours, so I have the feeling that you eyes would most likely suffer similar damage.

__________________
An elephant is a mouse built to government specifications.
Register to Reply
Power-User
Canada - Member -

Join Date: Sep 2006
Location: Canada
Posts: 435
Good Answers: 4
#48
In reply to #47

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 7:51 AM

"The part where the whites of your eyes turn a delightful shade of blood red seem to be the most disturbing, but it gets worse, because over the next few hours they go from red to a delightful shade of purple. Fortunately for me there was no permanent damage and everything settled down but it did mean wearing dark glasses at all times, to prevent anybody that ..."

That would explain your avatar...

__________________
Handle every stressful situation like a dog. If you can't eat it or play with it, just pee on it and walk away. - unknown.
Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#50
In reply to #47

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 8:57 AM

Depending on exactly where and how large the bubbles of gas that form when the body decompresses, loss of consciousness and irreparable brain damage could be almost instantaneous

If my understanding is correct , the body has evolved so that blood pressure relies on pressure from the pump (heart ) and one way valves being arranged optimally for a person subject to gravity . In a weightless orbit , fluid tend to accumulate in the upper body and more specifically the head . An air bubble would seem more likely to occur in the brain (rather than migrating from elsewhere) so brain death would be fairly rapid. The remaining grey jelly would become freeze dried.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#52
In reply to #50

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 9:22 AM

Kris, allow me to remind that gravity is not the main issue here, but rather vacuum instead

Lack of gravity will influence the body, but in a whole lot of other ways than vacuum, e.g, deterioration of bone mass, heart and muscle efficiency, etc.

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#53
In reply to #52

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 9:37 AM

I was pointing out that blood (and hence dissolved gasses ) would be found more abundantly in the upper body in space (compared to Earth). I admit boiling blood is not the only explosion risk , but the change in it's location has some bearing on where your body may start to boil with most damage.

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Guru

Join Date: Feb 2007
Location: Israel
Posts: 2923
Good Answers: 24
#54
In reply to #53

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 9:53 AM

To be honest here, I don't much think of the situation in terms of "live or die and how", as much as in: "osmotic pressure in vacuum, involving sealed bags with fluids", etc...

Register to Reply
Power-User

Join Date: Feb 2007
Location: Aberdeen, Scotland
Posts: 392
Good Answers: 21
#49

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 8:56 AM

The answer to all of this can be found by asking those who come from outer space. Because I deleted Donnatella Versaces phone number form my mobile I can't ask her but my boss assures me that delicate human bodies were not designed for naked space travel. Boxer shorts will not help either and if the vacuum of space is colder than the North Sea I can tell you that no matter how tough you think you are, you would still be a smaller man than when you went in. So it probably doesn't matter what happens to your lungs, eyes etc, you would still be singing like a castrato if you survived your zero pressure streak.

Register to Reply
Guru

Join Date: Mar 2007
Location: Etherville
Posts: 12334
Good Answers: 115
#51
In reply to #49

Re: Interesting Question: The Human Body Out In Space?

04/25/2007 9:00 AM

singing like a castrato

The tune of football fans , "I'm forever blowing bubble " maybe ?

(or is that Jacko's new tune )

__________________
For sale - Signature space. Apply on self addressed postcard..
Register to Reply
Register to Reply 54 comments
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.
Copy to Clipboard

Users who posted comments:

-A- (5); Anonymous Poster (1); bhankiii (2); Cardio-2 (2); JesterTerrestrial (1); Kris (17); MACA (2); masu (2); PWSlack (2); r&ddoc (1); rcapper (1); Rick@cae (1); techno (1); Yuval (16)

Previous in Forum: More Relativity - Absolute Rest?   Next in Forum: starting a business, maybe as 501c

Advertisement