The Big Bang - NASA Science
WEBNew 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. Learn more.
What is the Big Bang Theory? | Space
WEBJul 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.
What happened in the early universe? | Center for Astrophysics ...
WEBThe 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.
Big-bang model | Definition, Evidence, Videos, & Facts
WEBJul 29, 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.
The science behind the Big Bang theory | Astronomy.com
WEBDec 18, 2023 · Evidence of the Big Bang theory and what happened immediately after the expansion.
How did the Big Bang get its name? Here’s the real story - Nature
WEBMar 25, 2024 · The first cosmological theory of the Big Bang type dates back to 1931, when Belgian physicist and Catholic priest Georges Lemaître proposed a model based on the radioactive explosion of what he...
Big Bang - Wikipedia
WEBThe 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 .
NASA’s James Webb Space Telescope and the Big Bang: A Short …
WEBOct 11, 2017 · The concept of the Big Bang is easy to misunderstand. In this Q&A, Dr. John Mather, a Nobel laureate and the senior project scientist for NASA’s James Webb Space Telescope, answers some commonly asked questions about this expanding universe story, and about Webb’s role in understanding the early history of the universe.
The big-bang theory: construction, evolution and status
WEBJun 20, 2016 · View a PDF of the paper titled The big-bang theory: construction, evolution and status, by Jean-Philippe Uzan. Over the past century, rooted in the theory of general relativity, cosmology has developed a very successful physical model of the universe: the {\em big-bang model}.
The early universe - CERN
WEBHubble’s discovery was the first observational support for Georges Lemaître’s Big Bang theory of the universe, proposed in 1927. Lemaître proposed that the universe expanded explosively from an extremely dense and hot state, and continues to expand today.