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How cold is the universe?

Updated: 8/10/2023
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12y ago

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In the emptiness of deep space the average temperature in the universe is approximately three degrees above absolute zero(the temperature at which molecules themselves stop moving). In other words, it's almost -270 degrees Celsius, or -455 Fahrenheit.

On the other hand, an object orbiting a star like the Sun can reach extreme temperatures above 260 degrees Celsius (500 degrees Fahrenheit).

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12y ago
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9y ago

It is indeed cold in space. This is because there is nothing to hold in the heat to any surface.

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