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Bookmark or Share- The Big Bang - NASA ScienceStudy how the universe evolved, learn about the fundamental forces , and discover what the cosmos is made of. The origin, evolution, and nature of the universe have fascinated and confounded humankind for centuries.
- The big bang - Institute of PhysicsMost physicists believe the universe was born in a big bang 13.8 billion years ago. In it, the energy making up everything in the cosmos we see today was squeezed inside an inconceivably small space – far tinier than a grain of sand, or even an atom.
- Big Bang - WikipediaThe 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? | SpaceThe 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 | Britannicabig-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.
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