Temperature of space answer is not correct

Although the universe does radiate as a blackbody at ~2.7 degrees Kelvin, this is not the temperature of space right now, this is the doppler shifted temperature of space from billions of years ago.

Space itself varies greatly in temperature. H1 regions are about 70 degrees K, H2 regions are hotter.

So although the answer (regarding COBE) is very informative, it is not really the temperature of space, so much as it is the temperature of what space used to be.

No, the temperature space used to be is much hotter. If you took a thermometer out into the middle of one of the Great Intergalactic Voids, and waited for it to come into equilibrium with its surroundings, that thermometer would read 2.7 Kelvins. Which is, after all, the definition of temperature.

Are you sure about this? The 2.7 K is a temperature derived by fitting the CMB spectrum to a thermal spectrum, but that’s just one heat source. There are other heat sources even in the intergalactic voids, such as visible light and cosmic rays. (Though I can’t find a cite on the temperature of those sources at the moment…)

But the big question is: when the temperature of space goes up, who provides the Tylenol and chicken soup, and tells the galaxies to get into bed and get plenty of rest?

True, but in the middle of a void, those sources would be utterly insignificant. Even in the middle of a galaxy, as long as you’re a few lightyears from the nearest star, they’re insignificant, due to the extremely small proportion of the sky which is covered by the stars.