How is the universe organized?

The universe contains organized structures on all different scales, from small systems like the earth and our solar system, to galaxies that contain trillions of stars, and finally extremely large structures that contain billions of galaxies.

The cosmos is structured into multiple hierarchical structures: 1. Galaxies: These are massive systems of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity; 2. Galaxy Clusters: Groups of galaxies held together by gravity; 3. Superclusters: Massive groups of galaxy clusters; 4. Filaments and Voids: The large-scale structure of the universe is made up of interconnected filaments of galaxies surrounding vast, mostly empty voids; 5. At the largest scale, the universe appears to be homogenous and isotropic, with matter distributed fairly uniformly on the largest scales, punctuated by clusters and voids.