A spiral galaxy or barred galaxy, the milky way is one.
A spiral galaxy or barred galaxy, the milky way is one.
Spirals.
The Nuclear Bulge
A nuclear bulge is a dense concentration of stars, gas, and dust located at the center of a galaxy, often surrounding a supermassive black hole. It is typically more spherical in shape compared to the more flattened disk of the galaxy. The nuclear bulge plays a crucial role in the dynamics and evolution of galaxies, influencing star formation and the motion of stars and gas within the galactic core.
A spiral galaxy
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 Andromeda Galaxy is spiral shaped, much like our own Milky Way Galaxy.See related link for a pictorial.
The bulge is a tightly packed group of stars within a larger formation. In the case of the Milky Way Galaxy our "bulge" is the galactic centre.
This type of galaxy is categorized as a spiral galaxy. The bulge at the center contains older stars, while the spiral arms consist of younger stars and gas and dust regions where new star formation occurs. The Milky Way is an example of a galaxy with a bulge and spiral arms.
A Spiral galaxy with a central bulge [See related question]
An example of a bulge in astronomy is the Large Magellanic Cloud, which is a satellite galaxy of the Milky Way with a distinct central bulge of stars.
The oldest stars in a galaxy are usually located towards the centre. Also known as the bulge.