Orland-D
Credit - © Mark Wade
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To explore and work in space, human beings must take their environment with them beWithout the Earth's atmosphere to filter the sunlight, the side of the suit facing the Sun may be heated to a temperature as high as 120 degrees C; the other side, exposed to darkness of deep space, may get as cold as -160 degrees C. Paradoxically, the suit's life support system has to remove the heat and moisture generated by the sweaty working astronaut. This is usually accomplished by circulating cool water through an undergarment worn next to the astronaut's skin. Heat overload of space suits caused several crises cause there is no atmospheric pressure and no oxygen to sustain life.