Temperatures in intergalactic space

Aug 24, 2020
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Farenheight and Celcious are measures of air temperatures, right? I also read that the température of intergalactic space is only a few degrees above absolute zero. But here is my problem. If there is no air in intergalactic space, how can it be measured in Farenheight or Celcious. How can there be any temperature at all? Is there some theoretical concept of space without temperature? I wonder what that would "feel" like?
 

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