Physics – 6.2.2 Stars | e-Consult

Galaxies are vast collections of stars, gas, dust, and dark matter. They contain an enormous number of stars, typically estimated to be in the billions or even trillions. These stars are held together by gravity and are distributed across the galaxy in various structures like spiral arms, elliptical shapes, and irregular forms. The sheer scale of galaxies is a fundamental aspect of understanding the universe.