Image: NASA
The supermassive black holes are forming galaxies. But they also push material away from them. The interaction between black holes and their environment is more complicated than people think. When a black hole pulls material inside it the energy level of the material rises to an extremely high level. Part of that material travels to the poles of the black hole and impacts together.
That thing causes very high power X- and gamma ray beams that are leaving from black holes or at least near that thing. When those radiation pikes hit the material cloud around the black hole it makes the material shine. That shine means that the plasma that forms the main part of the galaxy is sending radiation.
What is the difference between interstellar and interplanetary nebulas? One description is that there are heavier elements like silicon and iron in the interplanetary nebulas.
Interplanetary nebulas are the supernova remnants. And interstellar nebulas are mainly hydrogen and other light elements like helium.
And that radiation pushes the plasma particles away from each other. So the supermassive black holes inside the galaxy are forming galaxies. But the energy that is left from the transition disk and material around the black hole also rips the galaxy into pieces. The jets of the black hole are transferring material away from galaxies but they are also forming the disturbance.
Without those disturbances, forming of new galaxies is impossible. Same way cosmic disturbances like energy impacts are making it possible that protostars are starting to form. Stable systems cannot form stars. There is needed some kind of disturbance or asymmetry that is causing the formation of the stars.
When the radiation of the exploding supernova or some cosmic eruption hits the interstellar nebula that causes the weight of the particles changes. This thing causes the effect where particles of the interstellar nebula start to go together. Forming of the star in a cloud that is mainly hydrogen requires that there is helium. In an interplanetary nebula, things like silicone or iron will start to grow the material around it.
Or in some other heavier elements that are causing the gravitational center. Otherways the ionized hydrogen between atomic hydrogens is starting to pile the particles up. The formation of the stars requires that there is a gravitational center in the nebula.
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