noun
A type of blanket made from a thin, heat-reflective material, often used in emergency situations to retain body heat and prevent hypothermia.
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The astronaut used a space blanket to stay warm in the harsh conditions of outer space.
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I always keep a space blanket in my car in case of emergencies.
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Hey, grab that space blanket over there, it's freezing outside!
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Her words were like a comforting space blanket, wrapping me in warmth and reassurance.