Because of this, the CMB is sometimes said to have a temperature of 2.7 degrees Kelvin (that is 2.7 degrees above absolute zero, or about minus 450 °F!) Therefore, the 2.7K temperature of the CMB may be quoted as the "temperature of space"- it is perhaps the best way to characterize the energy content of empty space.
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kierstengilmore
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6Answer:
Space is just above that, at an average temperature of 2.7 Kelvin (about minus 455 degrees Fahrenheit).
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madalyn
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