Overview Scientific theories The Big Bang theory, which states that the universe originally expanded from high or infinite density, is widely accepted by physicists.. In astronomy, cosmogony refers to the study of the origin of particular astrophysical objects or systems, and is most commonly used in reference to the origin of the universe, the Solar System, or the Earth–Moon system.
Jan 28, 2022 · The cosmic microwave background (CMB) is leftover radiation from the Big Bang or the time when the universe began. As the theory goes, when the universe was born it underwent rapid inflation
Jul 5, 2020 · 1. Steady State Theory. One alternate theory of the development of the universe is the Steady State model. Emerging as one of the first opponents to the Big Bang theory, Steady State postulates continuous creation of matter all over the universe to explain its discernible expansion. This kind of universe would be infinite, and it wouldn’t
Jan 3, 2023 · A representation of the evolution of the universe over 13.77 billion years. The far left depicts the earliest moment we can now probe, when a period of inflation produced a burst of exponential
Jan 9, 2022 · Then we can go on turning the clock yet further back, into the truly ancient “ Planck epoch ” — a period so early in the universe’s history that our best theories of physics break down
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