Which galaxy does Alpha Centauri belong to

astronomy

Like the Milky Way, other galaxies are made up of stars, gas, and dust. Nevertheless, star systems differ in terms of composition and shape. Our next larger neighboring galaxy is the Andromeda Nebula, which can already be seen as a blurred light spot with the naked eye. With a diameter of around 200,000 light years, it is roughly twice the size of the Milky Way. Galaxies can collide, merge or form larger systems - the so-called galaxy clusters and super-galaxy clusters.

Most galaxies can be classified as one of the following types:



The E stands for elliptical galaxies. The number behind it is a measure of the flattening of the system: E0 is circular, while E7 is strongly elliptical.

S indicates a disk-shaped spiral galaxy. Although S0 has such a disk shape and a strongly pronounced core, no spiral arms can be seen. At Sa, these arms are visible and tightly wound around a distinct core. The arms of Sb are a little wider open and the core is less prominent. At Sc, the spiral arms are finally very open and the core is correspondingly even weaker. The same classification applies to SBa, SBb and SBc - with the difference that these are barred spiral galaxies. The spiral arms are not bound directly to the core, but rather connect to a large bar that extends from the center of the galaxy.

Another common form are the irregular galaxies. As the name suggests, these star systems do not have a regular shape. They include the large and small Magellanic Clouds, which are in close proximity to the Milky Way.

Photograph of the particularly impressive "Sombrero Galaxy":


Galaxies on Wikipedia
alpha-Centauri Video: How are galaxies formed?
alpha-Centauri Video: How are galaxy clusters formed?
alpha-Centauri Video: Do galaxies collide?
alpha-Centauri Video: Are galaxies stable?
alpha-Centauri Video: How are bar galaxies formed?