Discover how Andromeda will influence the Milky Way through gravity, tidal forces, dark matter, and a future galactic merger.

Explore how cosmic expansion shapes galaxy motion, structure, and future evolution across the observable universe.

Learn what a supercluster is, how it differs from clusters and galaxies, and why these vast structures matter in cosmology.

Explore how massive stars collapse into black holes, what triggers the process, and why some stars leave behind neutron stars instead.

Galaxy mergers reshape star formation, stellar orbits, and galactic structure in ways that can trigger both bursts and shutdowns.

Galaxies are the observable building blocks of the Universe, revealing how matter, dark matter, and cosmic history fit together.

Learn what a spiral galaxy is, how its arms form, and what makes these galaxies among the universe’s most recognizable structures.

Discover how dark matter influences galaxy formation, rotation, clustering, and the large-scale structure of the universe.