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This maximal radiation density corresponds to about 1.2 × 10 17 eV/m 3 = 2.1 × 10 −19 kg/m 3, which is much greater than the observed value of 4.7 × 10 −31 kg/m 3. [4] So the sky is about five hundred billion times darker than it would be if the universe was neither expanding nor too young to have reached equilibrium yet.
The anthropic principle, also known as the observation selection effect, is the proposition that the range of possible observations that could be made about the universe is limited by the fact that observations are only possible in the type of universe that is capable of developing intelligent life.
The principle of plenitude asserts that the universe contains all possible forms of existence. Arthur Lovejoy, a historian of ideas, was the first to trace the history of this philosophically important principle explicitly. Lovejoy distinguishes two versions of the principle: a static version, in which the universe displays a constant fullness ...
Astrosociology, sociology of outer space, or sociology of the universe [1] is the study of the relationship between outer space, extraterrestrial places, and the wider universe and society. It is an interdisciplinary study between space-related sciences and sociology that seeks to understand the impact of human society outside our current ...
His work is known for its bold integration of Hermeticism, Copernican heliocentrism, and an infinite universe theory, which brought the concept of the world soul into a new, expansive context. Bruno’s cosmology was groundbreaking in that it proposed an infinite universe populated by innumerable worlds.
A common feature of all four multiverse levels is that the simplest and arguably most elegant theory involves parallel universes by default. To deny the existence of those universes, one needs to complicate the theory by adding experimentally unsupported processes and ad hoc postulates: finite space, wave function collapse and ontological ...
Conformal cyclic cosmology (CCC) is a cosmological model in the framework of general relativity and proposed by theoretical physicist Roger Penrose. [1] [2] [3] In CCC, the universe iterates through infinite cycles, with the future timelike infinity (i.e. the latest end of any possible timescale evaluated for any point in space) of each previous iteration being identified with the Big Bang ...
[1] [2] Both Newton and Bentley thought that the stars did not move and did not consider stars in motion. [2] A finite number of mutually attracting stars in motion can indeed avoid collapse. [3] Today it is known that an infinite universe uniformly filled with gravitating matter, if it originated in a static configuration, would indeed collapse.