History of the Big Bang theory - Wikipedia
The history of the Big Bang theory began with the Big Bang's development from observations and theoretical considerations. Much of the theoretical work in cosmology now involves extensions and refinements to the basic Big Bang model.
Big Bang - Wikipedia
The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. [1] The notion of an expanding universe was first scientifically originated by physicist Alexander Friedmann in 1922 with the mathematical derivation of the Friedmann equations.
The history of the universe: Big Bang to now in 10 easy steps - Space.com
Feb 2, 2022 · The history of the universe and how it evolved is broadly accepted as the Big Bang model, which states that the universe began as an incredibly hot, dense point roughly 13.7 billion...
Big-bang model | Definition, Evidence, Videos, & Facts | Britannica
Nov 25, 2024 · Big-bang model, widely held theory of the evolution of the universe. Its essential feature is the emergence of the universe from a state of extremely high temperature and density—the so-called big bang that occurred 13.8 billion years ago. Learn more about the big-bang model in this article.
What happened in the early universe? | Center for Astrophysics ...
About 13.8 billion years ago, the Big Bang gave rise to everything, everywhere, and everywhen—the entire known Universe. What caused the Big Bang? What happened that first moment at the beginning of the Big Bang? When did the first stars form?
What is the Big Bang Theory? | Space
Jul 26, 2023 · The Big Bang Theory explains how the universe began with an infinitely hot and dense single point that inflated to form the ever-expanding cosmos we see today.
The Big Bang - NASA Science
Overview The origin, evolution, and nature of the universe have fascinated and confounded humankind for centuries. New ideas and major discoveries made during the 20th century transformed cosmology – the term for the way we conceptualize and study the universe – although much remains unknown.
Big Bang - Science@NASA
The big bang theory of the universe starts with a single point which rapidly expanded and slowly evolved into the cosmos we see today. Some 13.8 billion years ago, the universe was a dense, tremendously hot (too hot for the existence of atoms), extremely tiny point that rapidly surged outward in all directions.
The History of the Universe: The Big Bang and Beyond …
What's the history of the universe? Follow us on a journey that starts with the Big Bang. All the way to the formation of stars, galaxies and eventually us.
Big Bang Timeline - Physics of the Universe
Since the Big Bang, 13.7 billion years ago, the universe has passed through many different phases or epochs. Due to the extreme conditions and the violence of its very early stages, it arguably saw more activity and change during the first …