Does that mean things don’t cool down in a vacuum? Is there a weird curve where by at some point having less cold gas arounds you means you’ll cool down faster instead of slower?
You would probably need very little thermal insulation, if any, for a space walk around Pluto as heat from sun will be quite low as well.
The energy of any radiation that may be going through a vacuum at a given instant is not a property of the vacuum (and is not an actual temperature).
I'll leave it here as I think I have repeated the same thing enough though I am not sure it has been heard.
I made a simple, yet fundamental statement. It's either true or false. There is no need to argue as if you had to out-do me in any way.
Vacuum cannot have a temperature. This follows immediately from the definitions.
This also means that the temperature of a vacuum's "walls", by which I'm guessing you mean particles in 'contact' with the vacuum, is just the temperature of these particles. It's not an indication of any "vacuum temperature".
Have a nice day.
That's what I have been repeating, yes.
You seem to agree with me since you explain how 'temperature' may be assigned to vacuum as a fudge. This is a dangerous thing to do as equilibrium temperature does not depend on the vacuum itself but on any radiations present.
The vast majority of heating/cooling that people experience in their day to day lives is done through conduction from the earth's atmosphere so in most situations you'd lose heat more slowly on Mars even if it is colder. It's kind of like the difference between being in cold air and cold water.
In fact, during some weeks of the year the Space Shuttle could not visit the International Space Station because at the ISS inclination, the Shuttle would have spent too much time in the sun. The ISS, Space Shuttle, and other satellites have large radiators to cool them down.
Think about when it's cold, and when it's cold and windy.
Low pressure air is like "anti" wind, even less cold then no wind on earth.
If you set air pressure and humidity to "standard" values, and wind to zero, you can express the combination of other values as if they were a temperature, and call that windchill.
Of all the variables wind is most important, since the rest don't vary very much on earth. But air pressure does vary on Mars, and thermal emissivity varies in space.