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. The theory itself was originally formalised by Father Georges Lemaître in 1927. [1]
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 .
What is the Big Bang Theory? | Space
2023年7月26日 · 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.
Big-bang model | Definition, Evidence, Videos, & Facts | Britannica
2024年11月25日 · 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.
Big Bang: How the Universe was created - BBC
2014年8月12日 · Around 13.8 billion years ago, all the matter in the Universe emerged from a single, minute point, or singularity, in a violent burst. This expanded at an astonishingly high rate and temperature,...
What happened in the early universe? | Center for Astrophysics ...
The Big Bang theory of cosmology successfully describes the 13.7 billion years of evolutionary history of our Universe. However, it is known that the current Big Bang theory cannot self-consistently explain its initial conditions. We are interested in finding out what caused the Big Bang, and the physics involved in this primordial epoch.
The history of the universe: Big Bang to now in 10 easy steps - Space.com
2022年2月2日 · 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 years ago....
The origins of the universe facts and information - National …
2024年8月16日 · The best-supported theory of our universe's origin centers on an event known as the big bang. This theory was born of the observation that other galaxies are moving away from our own at...
The Big Bang - NASA Science
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. What is Dark Energy? Inside our accelerating, expanding Universe.
Origins: CERN: Ideas: The Big Bang - Exploratorium
Astrophysicists have uncovered a great deal of compelling evidence over the past hundred years to support the Big Bang theory. Among this evidence is the observation that the universe is expanding. By looking at light emitted by distant galaxies, scientists have found that these galaxies are rapidly moving away from our galaxy, the Milky Way.