Big Bang theory
type: Concept
broader: Origin of the universe

Cosmology
type: Concept
narrower: Origin of the universe

Hubble-Lemaitre law
type: Concept
broader: Origin of the universe

Origin of the universe
type: Concept
alternative label: Formation of the universe
broader: Cosmology
narrower: Steady-state theory
narrower: Hubble-Lemaitre law
narrower: Early universe
narrower: Big Bang theory

Steady-state theory
type: Concept
broader: Origin of the universe

Early universe
type: Concept
broader: Origin of the universe