These galaxies are mostly made up of old stars and are shaped like spheres or ellipsoids. They have no spiral arms and are dominated by the light of older, reddish stars

These galaxies come in a variety of shapes and are classified by the size of their bulge and the appearance of their spiral arms.

Lenticular galaxies are a type of galaxy that are a cross between spiral and elliptical galaxies They have a large central bulge and a flattened disk, but no spiral arms. They are mainly made up of old stars, and have little gas and dust

An irregular galaxy is a galaxy that doesn't have a distinct shape, like a spiral or elliptical galaxy. They can be chaotic in appearance, with no nuclear bulge or spiral arms.