The milky way
Bright, distant, powerful, energetic, at the center of the galaxy.
It seems that just about EVERY galaxy has a huge ("supermassive") black hole in its center.
That probably refers to a quasar. Quasars are related to gigantic black holes.
I guess that would apply to any galaxy, since stars will have a tendency of accumulating towards the center.
the spiral galaxy is very bright because of its stars, that's why our galaxy is called the milky way because it looks milky and our galaxy(the milky way) is located in one of the arms of a spiral galaxy!
First, the center of a galaxy is not a "bright light". It's a mathematical point. This is a technical quibble, and it is true that the centers of spiral galaxies (like the Milky Way) tend to be brighter than the rest of the disk due to the density of the stars there. The reason we don't see the center of our own galaxy as a particularly bright patch is because we don't see by radio waves. In the radio spectrum, the center of the galaxy is quite bright. However, we see by visible light, and there's a lot of dust and gas between us and the center of the galaxy, which blocks out most of the wavelengths we can see.
The galaxy you are describing is most likely an elliptical galaxy. Elliptical galaxies are typically smaller than spiral galaxies, contain older stars, and have very little interstellar dust and gas, which contributes to their lack of new star formation. Their bright centers are a result of the dense concentration of stars, particularly older red stars, in the core.
A bulge is a tight group of stars found at the center of most spiral galaxies. The bright spot an the center of the galaxy in the picture above is the bulge. If this galaxy were seen from the side the collection of stars would create a bulge (spheroid) expanding out from the otherwise rather flat galaxy.
The galactic core is the center (not the very center) of the Milky Way Galaxy.
It could be a star, a galaxy, a quasar.
The center of the elliptical galaxy is very dense with many stars, and density decreases farther out.
The center of the elliptical galaxy is very dense with many stars, and density decreases farther out.