Because the air pressure in space is zero, i.e. a vacuum, so the internal pressure inside your body is no longer being balanced by the external pressure. Actually, many things would happen to you in this situation, including death.
For me no way you will just die because there is no air in space.
well of course there is. there is no air in space. only a lunatic would take his helmet of in space and die.
If you take of your helmet you will most probably die as you will have no oxygen!
Since there is no significant amount of oxygen in outer space, the rocket has to take all the oxygen it needs with it.
Take your pick... Suffocation (there's no air in space) Severe heamorraging as the cavities and blood vessels expand and rupture. (Space is a vacumn) Freezing. (It's very cold in space) Assuming you could survive all of that, the radiation from the sun would eventually kill you. Quite quickly if there happen's to be a star (like our sun) nearby that's going through a period instability; coronal mass ejections, solar flares etc..
It would depend on the amount of time that the helmet was off.
For me no way you will just die because there is no air in space.
no
well of course there is. there is no air in space. only a lunatic would take his helmet of in space and die.
you need to change your helmet and when you take it off you can not breathe.
Allow you to take off your helmet without taking damage from surfacing
A few hours, like 3-6 I think. But if your planning on going to outer space then bring a helmet!
Yes you can but your lungs will quickly rupture due to the sudden pressure difference in outer space. A Blowgun can be heard in space however as soon as you take off your space helmet to exhale air your blood will boil in 10 seconds and as a result you'll suffer from air embolisms and sudden explosive decompression almost immediately. So yes it is possible to use a Blowgun in space provided that you exhale quickly in 5 seconds and have an extra supply of oxygen available and at the same time closing your eyes to avoid bursting eyeballs. All of this must be done by the time you open your space helmet and put the blowgun to your mouth and fire otherwise you definitely will die instantly. The sound will be similar to a burp or exhaling air from your nostrils as you fire the weapon in space.
If you take of your helmet you will most probably die as you will have no oxygen!
Neil Might have taken space helmet,space suit,food,sleeping bags (to put on the walls to sleep) and some directions to the moon.Basically,you can to the moon yourself!
It keeps the sweat out of their eyes. Football players sweat a lot under those helmets and when they take them off, it will roll into their eyes. Some guys wear the skull caps under their helmets for the same reason, and so that their helmet doesn't pull their hair out when they take it off.
He is shown to have his helmet off, but as with all other helmet off appearances his face is not shown, just a helmet in his hands.