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16 kwi 2024 · Explore eight alternative explanations of how the universe came into existence, from quantum fluctuation to eternal inflation. Learn the pros and cons of each theory, the evidence and references, and the implications for cosmology.
Learn about the current hypotheses on how the universe formed, from the widely accepted Big Bang Theory to the speculative Multiverse and Simulation Theories. Explore the assumptions, evidence, and implications of each theory with Earth.com.
16 sie 2024 · How did the universe begin—and what were its early days like? The most popular theory of our universe's origin centers on a cosmic cataclysm unmatched in all of history—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.
Some speculative theories have proposed that our universe is but one of a set of disconnected universes, collectively denoted as the multiverse, challenging or enhancing more limited definitions of the universe.
Here is the history of the universe according to cosmologists’ current theories. Around 13.8 billion years ago, the universe expanded faster than the speed of light for a fraction of a second, a period called cosmic inflation. Scientists aren’t sure what came before inflation or what powered it.
26 lip 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.
