Active Galaxies are thought to be powered by rotation
The black holes at their center.
Super massive black holes.
In the late 1920s, the astronomer Edwin Hubble discovered that most of the galaxies he observed were moving away from Earth.
If the car is lighter, Then the balloon powered car will go further.
The rotation of the galaxies, and the rotation of the electron.
Self powered
well if u have solar panels that means that your houses electricity is then solar powered (or generated) a lizard as the need the sun to get there energy glow in the dark things can be solar powered as the need the suns light to the glow
A central, supermassive black hole.
astronomers did
Quasars or active galactic nuclei are thought to generate high energy relativistic jets at their poles, powered by a black hole.
Have no real effect on the merging "colliding" galaxies
galaxies
It is difficult to ask black holes about how they are involved in active galaxy research because they cannot talk, this makes them only peripherally involved in understanding active galaxies
Astronomy Observations and Theories - 2005 Active Galaxies 1-14 was released on: USA: 21 June 2006
you would of thought
The scientists are able to identify the different types of galaxies by high powered telescopes and by examining the pictures sent by various satellites orbiting the universe.
Perhaps you mean "thought to be"? - It is believed that all, or most, galaxies have a supermassive black hole at their center.
Irregular galaxies are thought to represent about 25% of all the galaxies. That puts the total at around 25 billion - depending on the source for the total amount (100 -> 300 billion)
It is known that active galaxies have small core regions because we can see them in images! These small regions known as uassars emit perful amounts of both radio waves and gamma rays...