The power at Center
Active galaxies, such as radio galaxies and galaxies containing quasars, produce far more energy than their stars can make. There is another evidence that something dramatic is going on from the jets. We can see matter swirling around the central region at colossal speeds from many Active Galaxies. We can also detect that a donuts shape of hot gas is spinning at the center. This make the astronomers thinks that this active galaxies probably contain gigantic black holes.
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