Galaxies are vast collections of stars, gas, and dust held together by gravity. They come in various shapes and sizes, with three main types:
Spiral
Spiral galaxies are characterized by their distinctive rotating disc with spiral arms curving out from a dense central region
Elliptical
Elliptical galaxies have a smooth, ellipsoidal shape without distinct structural features
Irregular
Irregular galaxies lack a defined shape and do not fit into the spiral or elliptical categories