Let's put it this way... All larger galaxies have huge black holes in their center. In addition to that, you can expect any galaxy to have a significant number of stellar black holes.
Most likely not. The best evidence of the existence of black holes has been found deep within galaxies.
Yes, many galaxies have supermassive black holes at their centers.
Not all galaxies have black holes. While many galaxies, including our own Milky Way, have supermassive black holes at their centers, there are also galaxies that do not have black holes. The presence of a black hole in a galaxy depends on various factors such as the size and age of the galaxy.
Not all galaxies have black holes in their centers, but many large galaxies, including our own Milky Way, are believed to have supermassive black holes at their centers.
It is currently believed that most, if not all, galaxies contain supermassive black holes at their centers. These black holes can vary in size, with some being relatively small and inactive. However, the presence of supermassive black holes in galaxies is a common feature in the universe.
Not all galaxies, but it is believed that the majority of galaxies have central black holes.
Yes they do.
Active Galaxies are thought to be powered by rotation
Not every galaxy has a black hole at its center. While many galaxies do have supermassive black holes at their centers, there are also galaxies that do not have black holes.
It's not "galaxy stars", but galaxies, that have the black holes at their center.All, or most, galaxies have a giant black hole at their center.
Yes
According to some info I got, when galaxies formed in the early age of the universe, they likely contained small black holes in their centers. As the standard scenario of galaxy formation, galaxies grow by coming together with one another by the pull of gravity. In the process, the black holes at their center merge together and quickly grow to reach their observed masses of a billion times that of the Sun; hence, they are called super massive black holes. Also at the time of emergence, the majority of stars form from available gas. Today's galaxies and their central black holes must be the result of a series of such events.ACTUALLY: It depends, which is larger, and if this happend they would "combine" to create a much larger black hole.