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The theory says spacetime should be warped by primordial gravitational waves that ricocheted out across the Universe with the Big Bang.
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. [2] [3] [4] [5]
Oct 21, 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 Editors of Encyclopaedia Britannica
Will the Universe end with a Big Freeze, a Big Rip – or something even weirder? Take a look into the distant future with astronomers from the Royal Observatory Greenwich Life on Earth, our Sun and Solar System, the Milky Way – all good things must come to an end.
May 2, 2018 · Stephen Hawking. The theory, which was submitted for publication before Hawking’s death earlier this year, is based on string theory and predicts the universe is finite and far simpler than many current theories about the big bang say.
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. Learn more.
Aug 16, 2024 · 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...
