what would happen to a person exposed to the vaccum of space without a spacesuit?
471492
First, due to the extremely low pressure- 0 pascals - all of the liquids in your body have their boling/freezing points lowered to the same temperature; all of your exposed fluids will boil: tears on eyes, saliva, urine (depending on the person's ability to keep his or her cool). Then, the capillaries around and on your eyeballs and other mucous membranes would rupture, spraying boiling blood into space. After about 20 seconds the normal person would be unconcious, though NASA trains its astronauts to last a full minute. After about 3 minutes you would succumb to suffocation, and you body would drift to space, nearly perfectly preserved, until:\n-It finally reentered Earth's atmosphere (assuming you were in Earth's orbit), where it would vaporize; \n-It hit another space object, such as an asteroid; \n-It is pulled in by another planet. \nIt all really depends on your location.\n\nP.S. contrary to popular belief, you would NOT explode. Your body structure and skin tautness will prevent that; however, you will probably reach a very unsightly level of bloating.
237380
Would depend on the environment they were placed in - in a modern city, the caveman would be dead within a matter of minutes probably by being hit by a car, as they would have no conept of what that was. In a plains or tundra environment, the Astronaut would survive as they are trained with survival skills and can learn, but the caveman would be adapted and would prosper where the astronaut would wait for rescue and not plan for long term survival.
980237
Since its a manned flight, the space craft being heavier, it would take at least eight months or more. However, like correctly pointed out by Christoph... N, it would be a very painful ride for the space passenger. The radiations and the athropy of the muscles & bones would cause a lot of discomfort.
861130
A person flushed into space would remain conscious for about ten seconds and die in about ninety seconds.  It's best if I quote from the "Bioastronautics Data Book" from NASA:\n\n"Some degree of consciousness will probably be retained for 9 to 11 seconds (see chapter 2 under Hypoxia). In rapid sequence thereafter, paralysis will be followed by generalized convulsions and paralysis once again. During this time, water vapor will form rapidly in the soft tissues and somewhat less rapidly in the venous blood. This evolution of water vapor will cause marked swelling of the body to perhaps twice its normal volume unless it is restrained by a pressure suit. (It has been demonstrated that a properly fitted elastic garment can entirely prevent ebullism at pressures as low as 15 mm Hg absolute [Webb, 1969, 1970].) Heart rate may rise initially, but will fall rapidly thereafter. Arterial blood pressure will also fall over a period of 30 to 60 seconds, while venous pressure rises due to distention of the venous system by gas and vapor. Venous pressure will meet or exceed arterial pressure within one minute. 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; the remainder of the body will also become cooled, but more slowly. \n\n"Cook and Bancroft (1966) reported occasional deaths of animals due to fibrillation of the heart during the first minute of exposure to near vacuum conditions. Ordinarily, however, survival was the rule if recompression occurred within about 90 seconds. ... Once heart action ceased, death was inevitable, despite attempts at resuscitation...."\n\nNOT FUN would be my summation.  It bears mention that there are examples of people who have been exposed to vacuum and recovered with virtuall no ill effects and people who have died because they were exposed to vacuum.  They tend to fall very well within the guidelines laid down above.  For more information and accounts, follow the link.\n\nOf course, if you're just asking how long it's possible to live in a space station, then the answer is indefinitely.  The current record-holder for a space stay is Valeri Polyakov who stayed in orbit for 14 months.  It was only staying on Earth afterward that was the hard part.
911012
In all probability the child body would adapt to the weightless environment fine as the human body tends to adapt well, and is quite resilient. If, however, the child was to land back on earth, the child's body may experience physical trauma, as Astronauts who have experienced extended space flight have had to be rehabilitated when they return to earth. This is because their blood flow, and muscle mass changes to adapt to a weightless environment, and so it also has to adapt back to an environment with gravity.
496211
The leavings would have no mass, no length, no width, no depth, no measurements of any kind and there would be no beings in existence, sentient or otherwise,  to perceive this lack of existence so nothing would be here not even here would be here. It would be nowhere.
417794
without a suit . . . you do not explode, the movie industry once again fools the public . . .\n\ntrue, the nitrogen in your blood would boil out of your blood, the temperatures would freeze you, you would be blinded instantly by the rays of the sun, and of course, assuming youre still alive, you would suffocate . . . if you wanted to end someone's life quickly, just let them out of an airlock with no protection.
356289
Not sure about the vacuum- I'd be more concerned about the possibility of needing a tissue... at either end. *sigh* The scientific mind never stops wondering...even when it should. lol.
1165028
Your question is theoretical and therefore all answers you receive will be theoretical.  I would think that even if it were for a split second, you would feel some kind of pain.  Of course, if you're floating around in space unprotected, you'd be dead before you got there.
297450
You are open to the absolute vacuum of space. Now if you understand vacuums the tighter it is the higher potential pressure on anything containing matter. Therefore when exposed to a vacuum all the fluids of your body will rapidly escape with the thin layers of flesh not even slowing them down. Think of a water balloon that has been overfilled.
971235
Depends on your momentum when you do so.\n\nIf you're utterly still and blow out air in space, you will move backwards.\n\nWell, your frozen corpse will...
455945
a person should not change the fuel moderator ratio, if anything the person would feel warm because their body would help dissipate the heat from the core, so there should be no effect. \nlaunching the core in to space shouldnt affect its power output, being that there is not air in space to cool it or contain it it may just overheat and melt-down, or become an uncontrolled reaction and explode like any other nuclear weapon. but i am not too sure
513551
A house fly in space would float weightless without moving.  However, if it started to flap its wings, it would create thrust and move by pushing the oxygen in the cabin.  Though, if it were outside the cabin (and able to breathe), it would flap its wings with no result as outside space is a vacuum and the flapping would creat no thrust.
669135
It would be barren, cold from the lack of atmosphere, rusty, and some winds.  And you would need to bring your own air, since mars has none.  Mars has a high temperature of 70F, and it drops from there.  Sorry.  The atmosphere, mainly made of carbon dioxide, would suffocate you.  If you didnt have these problems, you would see plenty of rusting dust, mainly since iron is a element in this soil.  Some 60 mph winds would blow at you as well.  But because of the lack of atmosphere, it would mearly feel like a 6 mile per hour wind.
194221
not long without protective gear.......I think the liquids in your body would evoporate in a very painful manner..\n peace
287954
The safest way without drugs is an isolation chamber. Floating in complete darkness, in a liquid with the same temperature and specific gravity as the body for an extended period can often induce an out of body experience, along with auditory and visual hallucinations. It may feel like you're leaving your body, but the fact is it's simply an illusion caused by not enough bio-feedback stimulating the part of your brain responsible for situating your body in space. There have been numerous University studies that have used isolation chambers, in part seeking a rational explanation for near-death and out of body experiences. Interesting stuff.
699853
At about the center of the earth you would probably burst into flames do to the magma.if you survived that you would be upside down (relative to the ground)