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As our telescopes improve, we have discovered that there are supermassive black holes in the cores of many, perhaps most galaxies. Scientists have long known that the galaxies did not appear to have enough mass to stay together; since they DO stay together, there has to be mass - a LOT of mass - that we aren't seeing.
Since we don't know anything other as a core for a galaxy then, the Core itself must be called "The Black Hole".
What else can I help you with?
What is a galaxy that has a dense core of stars and has spiral arms called?
All galaxies have a dense core of stars. Spiral galaxies, however, have arms that are often visible. There are two kinds of spiral galaxies: barred, where there appears to be a line running from arm to arm through the core, and ordinary, where there is no bar.
How is know that active galaxies have small core regions?
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...
What galaxy is smaller than a Spiral and Elliptical Galaxy?
By virtue of their name, dwarf galaxies are smaller. Most galaxies are dwarf galaxies.
What kind of galexies are there?
There are generally three types of galaxies: spiral galaxies, elliptical galaxies, and irregular galaxies. Spiral galaxies like the Milky Way have a disk shape with arms of stars spiraling out from a central core. Elliptical galaxies are shaped like ellipses and contain mostly older stars. Irregular galaxies have a less defined shape and tend to have a mix of young and old stars.
What is the type of galaxy that has a nucleus of bright stars with arms that circles around it?
All types of galaxies have a core with a high star density. All galaxies with "arms" are called Spiral Galaxies, of which there are sub-types related to the shape of the arms.
What is the name for a group of galaxies?
A group of galaxies is called a galaxy cluster or galaxy group.
What is the name of the limbs in spiral galaxies?
Arms
How did the spiral galaxies get its name?
because it was spiral
Why is the core of a galaxy a place you would not want to live?
The core of any galaxy is not an ideal place to live, as most, if not all galaxies have a super massive black hole at the centre.
What is the name of the core in mercury?
The core does not have a specific name.
Does the sombrero galaxy orbit?
All galaxies orbit around a central core - firmly believed to be a massive black hole.
What are the name of two irregular galaxies?
pluto and venus
