The same age as stars in other galaxies.
An irregular luminous band of stars is called a galaxyof stars.
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.
Typically irregular galaxies have the oldest stars
Constellation.
irregular galaxy
There are about 400 billion stars in galaxies
An irregular luminous band of stars is called a "galaxy." Galaxies are massive systems of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. They come in various shapes and sizes and can contain billions to trillions of stars.
A star is typically considered a regular object in astronomical terms, as it follows predictable patterns of formation, evolution, and behavior based on physical laws. However, some stars can exhibit irregularities in their brightness or behavior, such as variable stars, which may appear irregular in their light output. Overall, while stars are generally regular in their fundamental nature, certain types can display irregular characteristics.
Elliptical galaxies are typically larger than irregular galaxies. Elliptical galaxies are shaped like ellipsoids and often contain more stars and stellar mass compared to irregular galaxies, which have a more irregular and chaotic shape and structure.
An irregular galaxy is a galaxy with no definite shape like spirals, lenticulars, and ellipticals.
From the material of old stars.
You can also distinguish them by the types of stars - older stars versus younger stars, and stars of different "metallicity".