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The Big Bang is a physical theory that describes how the universe expanded from an initial state of high density and temperature. [1] The concept of an expanding universe was scientifically originated by physicist Alexander Friedmann in 1922 with the mathematical derivation of the Friedmann equations.
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology.. Research published in 2015 estimates the earliest stages of the universe's existence as taking place 13.8 billion years ago, with an uncertainty of around 21 million years at the 68% confidence level.
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]
NASA wants to peer back in time to the beginning of the universe. And with a new space telescope, scientists say they can do that. New NASA space telescope will study Big Bang, origin of the universe
The CMB is landmark evidence of the Big Bang theory for the origin of the universe. In the Big Bang cosmological models, during the earliest periods, the universe was filled with an opaque fog of dense, hot plasma of sub-atomic particles. As the universe expanded, this plasma cooled to the point where protons and electrons combined to form ...
4–8 billion years from now (17.8–21.8 billion years after the Big Bang) An artistic illustration of what it would look like from Earth during the Milky way - Andromeda galaxy collision event The Andromeda Galaxy is approximately 2.5 million light years away from our galaxy, the Milky Way galaxy, and they are moving towards each other at ...
On Sunday, "60 Minutes" took a look at NASA’s largest and most expensive instrument to date, the James Webb Space Telescope. NASA set to launch space telescope ‘100 times more powerful’ than ...
It was later discovered that in this picture the JWST had also revealed three ancient galaxies that existed shortly after the Big Bang. Its images of these distant galaxies are views of the universe 13.1 billion years ago. [264] [266] [267] On 14 July 2022, NASA presented images of Jupiter and related areas by the JWST, including infrared views ...