The Big Bang Theory is the prevailing cosmological model that describes the universe from its earliest known stages to its present expansion and cooling.

The cosmic microwave background radiation is the leftover radiation from the Big Bang, which is the prevailing cosmological model that describes the universe from its earliest known stages to its present expansion and cooling.

The Great Wall is the largest known structure in the universe, stretching over 500 million light-years in length.

Hierarchical Clustering is the theory that describes the formation of galaxies and large-scale structures in the universe through the merging of smaller structures.

Dark Energy is the name of the force that is responsible for the expansion of the universe.

The Standard Model of Cosmology is the theory that describes the evolution of the universe from its earliest moments to the present day.

The Big Bang Nucleosynthesis Theory is the theory that describes the formation of the first stars and galaxies in the universe.

The Standard Model of Cosmology is the theory that describes the evolution of the universe from the present day to the future.

The Nebular Hypothesis is the theory that describes the formation of the solar system.

The Planetesimal Hypothesis is the theory that describes the formation of planets around stars.

The Capture Hypothesis is the theory that describes the formation of moons around planets.

The Nebular Hypothesis is the theory that describes the formation of stars.

The Nebular Hypothesis is the theory that describes the formation of galaxies.

The Big Bang Theory is the theory that describes the formation of the universe.

The Standard Model of Cosmology is the theory that describes the evolution of the universe from its earliest moments to the present day.