Sky Has No Limits...! So Do I....!

Hey all..! This is an answer for my friend's question...

" why do astronauts use special space suits & what will happen if one of the suits give-way when some one is at space?"

Astronauts use specially designed space suits because,

1. The atmosphere at space is oxygen deficient.(absence of air).
2. The temperature at space is not convenient for human life.( sun shade temperatures are in -100 degree Celsius and sun lit area temperatures are more than 100 degree Celsius).
3. The Astronauts must be prevented from Cosmic radiations.
4. They must be prevented from micrometeorites which move at high speed.


There may be some minor reasons also other than the above specified reasons. The space suits are specially designed to be gas-tight or air-tight. The reason is that when oxygen supplied from the cylinders to the face-visor must not leak outside or the effect of absence of air or vacuum should not suck out all oxygen out from the visor (there-by from the oxygen cylinders). Also if the suit is made air-tight, then when we breathe out carbon-di-oxide, it should be effectively removed from the face-visor to avoid detrimental effects of carbon-di-oxide. It also maintains a pressurized atmosphere like in Earth.
There are various types of space suits used through-out history of space missions. But just for information, I will make emphasis on EMU, the latest of all space-suits.
EMU---Extravehicular Mobility Unit.

• Weight----------127 Kgs on Earth.
• Thickness-------Approx 0.5 cms.(13 layers)
• Atmosphere-----0.29 atmospheres.(pure oxygen).
• Cost------------$12 million.

So now lets analyze the condition when a space-suit gives way when an Astronaut is at space....!
As the temperature may be very less, we may think that we instantly freeze to death. But mostly this does not happen. When a space-suit gives way, first the oxygen is emptied as there is totally "vacuum" surrounding around. If we try to hold our breath, probably our lungs may tear off due to the pressure difference. If we try to exhale, then lungs may collapse, leading to continuous drain of oxygen from blood stream. So, any blood flowing through lungs becomes de-viod of oxygen and within 15 seconds the supply of oxygen to brain is cut-off leading to unconsciousness and finally death. We will not freeze instantly as there is nothing in space to conduct heat. Thus we find how important are space-suits for Space travel...!