4. What if an astronaut walking in space without a space outfit?

Clothing that is worn astronaut to walk outside the space of the plane and from the International Space Station (International Space Station) is called the Extravehicular Mobiliry or EMU. Clothing space allows astronauts could walk around safely in space like a walk in the earth. Clothing space provides the following things. 

1. Atmospheric pressure 

 Clothing space provides air pressure to keep track of body fluids astronauts to remain in a liquid state. In other words, to maintain body fluids so as not to boil or heat up. The pressure in this outfit was lower than normal air pressure on Earth (4.3 comparable with 14.7 per square inch) so that the clothes are not bloated and inflexible. 

2. Oxygen 
    Clothing space should provide pure oxygen due to low pressure. At low pressure, normal air 78% nitrogen, 21% Oxygen, and 1% other gases) will be dangerous because the concentration of oxygen in the lungs and low blood. 

3. A constant temperature 
    To cope with very different temperature in the room space, mostly clothing space partitioned by the layers of fabric (Neoprene, Gore-Tex, Dacson) and covered with outer layers that have a reflective power (Mylar or white fabric) to reflect (reflect) lightsun. 

4. Protection of Mikrometeoroid 
    Apparel space has many layers of fabric such as Kevlar Dacson or that are resistant to hard objects. The layers prevent the clothes torn from outer space objects.

Space is a place very much at odds with the earth. If you do not wear outer space and set foot out of the space shuttle. such as the International Space Station (International Space Station) or the world who have little or no atmosphere, like the Moon or Mars, then the result like this is going to happen. 

  • Within 15 seconds you will not unconscious because there is no oxygen in place 
  • Blood and fluids in the body will boil, then freeze because there is little or no air pressure. 
  • Body tissues (skin, liver, and other internal organs) would expand by body fluids to boil. 
  •  You will mengghadapi opposite temperature changes.
    • -Areas exposed to sunlight: 248 F (120 C)
    •  Shadow region: -148 F (-100 C) 
  • You will be exposed to various kinds of radiation, such as cosmic rays and charged particles emitted from the sun (solar wind) 
  • You will be hit by small particles such as dust and rocks that move with high velocity (mikrometeoroid) or Yeng debris orbiting space objects like satellites / spacecraft. 
The human body can only withstand the vacuum within a few seconds. So, like in the movie 2001: A Space Odyssey when Dave came out of a vacuum chamber catapult into the air and slid into the space station, it might just happen. However, the above incident lasted only a few seconds. Beyond that the situation will deteriorate rapidly.

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