What would happen to you if you jumped off of a cliff on the moon?

Answer 1

When the human body is suddenly exposed to the vacuum of space, a number of injuries begin to occur immediately. Though they are relatively minor at first, they accumulate rapidly into a life-threatening combination. The first effect is the expansion of gases within the lungs and digestive tract due to the reduction of external pressure. A victim of explosive decompression greatly increases their chances of survival simply by exhaling within the first few seconds, otherwise death is likely to occur once the lungs rupture and spill bubbles of air into the circulatory system. Such a life-saving exhalation might be due to a shout of surprise, though it would naturally go unheard where there is no air to carry it.

In the absence of atmospheric pressure water will spontaneously convert into vapor, which would cause the moisture in a victim's mouth and eyes to quickly boil away. The same effect would cause water in the muscles and soft tissues of the body to evaporate, prompting some parts of the body to swell to twice their usual size after a few moments. This bloating may result in some superficial bruising due to broken capillaries, but it would not be sufficient to break the skin.

Within seconds the reduced pressure would cause the nitrogen which is dissolved in the blood to form gaseous bubbles, a painful condition known to divers as "the bends." Direct exposure to the sun's ultraviolet radiation would also cause a severe sunburn to any unprotected skin. Heat does not transfer out of the body very rapidly in the absence of a medium such as air or water, so freezing to death is not an immediate risk in outer space despite the extreme cold.

For about ten full seconds- a long time to be loitering in space without protection- an average human would be rather uncomfortable, but they would still have their wits about them. Depending on the nature of the decompression, this may give a victim sufficient time to take measures to save their own life. But this period of "useful consciousness" would wane as the effects of brain asphyxiation begin to set in. In the absence of air pressure the gas exchange of the lungs works in reverse, dumping oxygen out of the blood and accelerating the oxygen-starved state known as hypoxia. After about ten seconds a victim will experience loss of vision and impaired judgement, and the cooling effect of evaporation will lower the temperature in the victim's mouth and nose to near-freezing. Unconsciousness and convulsions would follow several seconds later, and a blue discoloration of the skin called cyanosis would become evident.

At this point the victim would be floating in a blue, bloated, unresponsive stupor, but their brain would remain undamaged and their heart would continue to beat. If pressurized oxygen is administered within about one and a half minutes, a person in such a state is likely make a complete recovery with only minor injuries, though the hypoxia-induced blindness may not pass for some time. Without intervention in those first ninety seconds, the blood pressure would fall sufficiently that the blood itself would begin to boil, and the heart would stop beating. There are no recorded instances of successful resuscitation beyond that threshold.

Though an unprotected human would not long survive in the clutches of outer space, it is remarkable that survival times can be measured in minutes rather than seconds, and that one could endure such an inhospitable environment for almost two minutes without suffering any irreversible damage. The human body is indeed a resilient machine.

Answer 2

Nothing much. As long as your spacecraft was maintained at normal atmospheric pressure, you should be fine.

If the spacecraft cracks open, then you will be quickly dead, unless you can get back into a pressurized environment. You will suffocate, your eyes would quickly dry out and crack open, and your blood would boil out of your skin.

Answer 3

You would fall. The gravity on the Moon is only about one-sixth the gravity on the Earth, so if you jumped from a 30 foot cliff, it would only feel like a 5 foot fall. The problem is that you might tumble, and crack the faceplate on your space suit helmet, which would let the air out of your space suit and you would be killed - not from the fall, but from the depressurization.

If you jumped off a 300 foot cliff on the Moon, it would feel like a 50-foot fall, which would probably be fatal, even if you didn't break your space suit.

Answer 4

Almost certainly yes. The engineering challenges certainly won't be much tougher than building an underwater tunnel, and that's been done several times.

However, it's much more likely that we will build very few structures on the surface of the Moon, that most things will be subsurface. Partly that will be to ease the strain on heating and cooling, but also to protect against meteoroid damage. The Moon has no protective atmosphere to slow down and burn up meteoroids.

Answer 5

Nothing for a short time.

Obviously not having oxygen to breath would eventually (a few minutes) lead to death.

Note that our bodies would not explode in a vacuum as most Holywood films suggest.

With a means of breathing the next problem would be radiation - especially in full sunlight.

Answer 6

You will die very soon because there's no oxygen and airpressure.

You will freeze and fry at the same time. You would have about 1.5 minutes to live.

Answer 7

if we don't wear space suit in space our whole body will be brust beacause of too much of atmospheric pressure.

Answer 8

He/she will suffocate, freeze, and explode due to lack of oxygen, heat, and pressure.

Answer 9

Yes

Not without tremendous technical support. By itself the moon cannot sustain life

Answer 10

you would freeze because there's no atmosphere to hold heat. Also there's no air pressure or air so tjat leads to suffocation. death would happen within about 1.5 minutes