As an expert in astrophysics, I can explain that while space is extremely cold, a person would not
instantly freeze. The human body has a certain amount of internal heat and, in the vacuum of space, there is no mechanism like convection to quickly transfer that heat away. Heat transfer in space primarily occurs through radiation, which is much slower than the convection that occurs on Earth. So, while the body would eventually cool down, the process would not be instantaneous.
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