its called a globular cluster
Global Cluster
The concentration of stars is typically more centrally located in elliptical galaxies compared to spiral galaxies. Elliptical galaxies have a more concentrated spheroidal shape with stars distributed densely in the center, while spiral galaxies have a more spread-out disk structure with stars distributed along spiral arms.
I think you are describing a "globular cluster", which are associated with older stars by most astronomers.
milky way is a spiral galaxy spiral galaxies have younger stars in the arm and older stars in the middle
That is a globular cluster. These clusters are spherical collections of stars that orbit around the center of a galaxy in its halo. They are typically made up of thousands to millions of stars that are much older than the stars found in the disk of the galaxy.
Globular Cluster.
Globular Cluster.
Yes. Some spiral galaxies do contain at least 1 trillion stars.
A spiral galaxy is just a type of galaxy but I can tell you that the stars in the middle are the oldest and the ones on the outside are the youngest.
Nebulae are located within the spiral arms of spiral galaxies. These regions are areas of star formation where gas and dust clouds collide and condense, leading to the birth of new stars. The glowing gas and dust of nebulae can be seen as colorful patches within the spiral arms of galaxies like the Milky Way.
some are big.
While spiral galaxies are bright, elliptical galaxies are dim. Spiral galaxies are hotbeds of star formation, but elliptical galaxies aren't nearly as prolific because they contain less gas and dust, which means fewer new (and brighter) stars are born