The hot big bang or "explosive" nucleosynthesis theory of the origin of the universe predicts the existence of a relic cosmic microwave background (CMB) radiation left over by the big bang. The first to describe a very hot and explosive beginning of the universe on a scientific basis was Georges Lemaître, a Belgian mathematician and
The Big Bang theory, which assumes general relativity to be true, is the modern cosmological model of the history of the universe. It also contains a singularity.The Big Bang theory is the most widely supported theory on the birth of the universe. It states that about 13.8 billion years ago, the universe expanded and cooled from an infinitesimally small
Hubble'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. Subsequent calculations have dated this Big Bang to approximately 13.7 billion years
Download. Dr David Krofcheck is a particle physicist who believes that the Big Bang is how matter came about. In this video, David explains how the universe as we know it came about - the Big Bang produced all of the hydrogen and most of the helium present in the universe.In the standard theory, acceleration occurs after the big bang because of an ad hoc inflaton field. In the prebig bang scenario, it occurs before the bang as a natural outcome of the novel Big Bang. The Big Bang is the cosmological model of the initial conditions and subsequent development of the universe that is supported by the most comprehensive and accurate explanations from In particular, the big bang model of the universe begins with a singularity—a point that appeared out of nothing and contained the precursors of everything in the universe in a region so small The Big Bang is the best theory we have to explain the birth and existence of the Universe. But while satisfying and substantially supported by the weight of scientific evidence, the defining theory of cosmology is not perfect. There remain three key problems.
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