The nonsense is never ending at NASA. Check out this article: NASA - Intergalactic Weather Map
To begin with, they are producing a temperature map of the space surrounding galaxy NGC 5813 and reverse the temperature scale. Instead of using red to represent the cooler temperature and blue to represent the higher temperature, such as in reality, blue is cooler and red is warmer.
In the produced map, the galaxy is seen as cooler than the surrounding space. NASA's interpretation? The cool galaxy is heating up the surrounding space at huge scales of distance. An ice cube makes the room warmer? How does NASA explain this?
Powerful jets produced as gas swirls toward the black hole push cavities into the hot gas and drive shock waves -- like sonic booms -- outwards, heating the gas.
So gas (nearly invisible hydrogen with practically no mass) swirls into a mythical black hole and then produces powerful shock waves that heat up vast areas of space light years from the source without heating the galaxy. A rational person would ask why the more dense gas near the galaxy does not heat up more than the far distant regions of space! It is as though their proposed shock waves possess magical properties transcending space.
If one were to look at this scenario from the perspective of the Aether Physics Model, one would see the so-called "black hole" as a region of disappearing matter at the center of a galaxy. The larger a galaxy is, the faster matter disappears at its center. Thus the light and matter traveling to the center of the galaxy disappears and the center of the galaxy appears cooler than the surrounding space. A similar effect happens in tornadoes, and wind vortexes on Earth, although in these cases the heat is pumped away in the form of infrared radiation, such as at the tops of strong thunderstorms.
Matter continually is created through the Casimir effect (affecting electrons), and fusion (affecting protons). Thus in regions away from galactic centers, it would appear warmer.
The collapsing of matter at the centers of galaxies and the generation of matter in the outer regions creates the inward spiral that is seen in all well established galaxies.
The jets observed in the polar regions of the galaxies are similar to the jets of heat seen above thunderstorms. The inward spiral both destroys matter, but also squeezes matter and causes some of it to escape at high velocities.