Space blankets (also called mylar blankets) consist of a thin layer of plastic (often PET), with an extremely thin layer of metal (usually aluminium) over it. The blanket is wrapped around a person with the metallic, reflective side on the inside. The metal reflects visible light as well as infrared light - this is how it reflects body heat back onto the person around which it is wrapped.
Space blankets are also very light and take up very little space. They're wind- and waterproof too, so will keep you dry and warm even when the wind is blowing, or it's raining.
The space blanket was developed by NASA in the 1960's for the US space program. These days it's used in emergencies, first aid, and for camping.
Space blankets are also very light and take up very little space. They're wind- and waterproof too, so will keep you dry and warm even when the wind is blowing, or it's raining.
The space blanket was developed by NASA in the 1960's for the US space program. These days it's used in emergencies, first aid, and for camping.
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