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''This article discusses scientific theories of creation (cosmogony). For a discussion of the cosmogonic beliefs of traditional cultures, see origin belief.''
'Cosmogony', or 'cosmogeny', is any
theory concerning the coming into
existence or origin of the
universe, or an
origin belief about how
reality came to be. The word comes from the Greek ''κοσμογονία'' (or ''κοσμογενία''), from ''κόσμος'' "cosmos, the world", and the root of ''γί(γ)νομαι / γÎγονα'' "to be born, come about". In the specialized context of
space science and
astronomy, the term refers to theories of creation of the
Solar System and their study (for example, the
Solar Nebula theory).
Cosmogony can be distinguished from
cosmology, which studies the universe at large and throughout its existence, and which technically does not inquire directly into the source of its origins. There is some ambiguity between the two terms, for example, the
cosmological argument from
theology regarding the existence of
God is technically an appeal to cosmogonical rather than cosmological ideas. In practice, there is a
scientific distinction between cosmological and cosmogonical ideas.
Physical cosmology is the science that attempts to explain all
observations relevant to the development and characteristics of the universe as a whole. Questions regarding why the universe behaves in such a way have been described by physicists and cosmologists as being
extra-scientific, though
speculations are made from a variety of perspectives which include
extrapolation of scientific theories to untested regimes and
philosophical or
religious ideas.
Attempts to create a
naturalistic cosmogony are subject to two separate limitations. One is based in the
philosophy of science and the
epistemological constraints of science itself, especially with regards to whether
scientific inquiry can ask questions of "why" the universe exists. Another more
pragmatic problem is that there is
no physical model which can explain the earliest moments of the universe's existence (
Planck time) because of a lack of a consistent theory of
quantum gravity.
Epistemological limitations to cosmogony
The assumptions of
naturalism that underlie the
scientific method have led some scientists, especially
observationalists, to question whether the ultimate reason or source for the universe to exist can be answered in a scientific fashion. In particular, the
principle of sufficient reason seems to indicate that there should be such an explanation, but whether a satisfactory explanation can be obtained through scientific inquiry is debatable. A scientific examination of cosmogony using existing physical models would face many challenges. For example, equations used to develop models of the origin do not in themselves explain how the conditions of the universe that the equations model came to be in the first place.
Theistic explanations for origins indicate one or more
supernatural beings as the
explanation, though
atheist commentators often point to this as an
argument from ignorance or a
God of the gaps fallacy, and that such an assumption provides no explanation for existence of the deity.
Nondual explanations by contrast state that the very question is misleading, since it contains erroneous assumptions of beginnings, endings and the nature of existence itself, and consider the visible universe as phenomenology.
As a result of this, scientific cosmogonies are sometimes supplemented by reference to
metaphysical and
theistic belief systems. The problem can be summarized as three classical
paradoxes. These paradoxes (discussed by both
Kierkegaard and
Leibniz) are:
#reconciling a doctrine of
causation (similar to the 13th century proof of God posed by
Thomas Aquinas);
#reconciling the
conservation law ("something from nothing");
#reconciling issues of
temporal (as in
Zeno's paradoxes) and
logical regression.
However, some of the metaphysical principles used to formulate these classical paradoxes no longer enjoy an unchallenged status as laws of thought. For instance,
quantum mechanics gives an independent motivation to challenge the
principle of sufficient reason.
Planck time limitations to cosmogony
Planck time (10
-43s) is the time it would take a
photon travelling at the speed of
light to cross a distance equal to the
Planck length. It has been proposed that this may be the hypothetical "
quantum of time", the smallest measurement of time that has any meaning, although in current physics theory time is not quantized.
Although the laws of physics lose experimental support at the Planck time, modern
science has sought to clarify the nature of these paradoxes, so far with only limited success. For example, one can apply the current understanding of
grand unified theories (GUTs) – both quasi-classical (such as
general relativity) and modern (such as
quantum gravity,
superstring, and
M-theories) – to these three primary cosmogonic paradoxes in
thought experiments. While these result in some contradictions and lack completeness in a mathematical sense (being based on axioms that are 'merely' self-evident, but not robust under the stresses of radical scepticism) these paradoxes can nonetheless be analyzed rationally using the subatomic applications of
quantum cosmology, particularly through the employment of the
Schrödinger wave equations.
In each case, where
general relativity fails as the curvature of space-time invokes singularities from its equations at t=0, the statistically "grey" nature of
quantum cosmology tends to allow a scientific rationale to account for each paradox, and in so doing allows for a scientific perspective on previously theistic terrain. For example, application of quantum "fuzziness" (per the Wheeler-DeWitt application of subatomic position and momentum equations to universal radius and expansion) avoids boundary issues, as developed in the
Hawking-Hartle Wave Function.
All such equations are based on
differentials, which assume a
continuum, where in our universe, affected by the Planck length and other
minimum scales, this continuum has only limited meaning, about which philosophy remains in a state of semantic flux.
The become-into-being of the universe in science fiction
Books
★ In
David Brin's book 'Earth' it is suggested by a scientist, that in the moment of the collapse of an experimentally created
black hole, it separates itself from this universe (like the separation of a child from its mother) taking with it all consumed energy which lies behind the event horizon. In his speculation the implosion of a
singularity in this universe is followed by an explosion/expansion of a singularity in the child-universe, which then became independent of ours. Of course this causes an energetic underpressure with every collapse of a
black hole, finally making this universe disappear when the last singularity implodes. It can be interpreted as a variant of the
oscillatory universe theory.
See also
★
Cosmology
★
Emanationism
★
Esoteric cosmology
★
Eschatology
★
Existence
★
Metaphysical cosmology
★
Origin belief
★
Nondualism
★
Religious cosmology
★
Ultimate fate of the Universe
External links
★
First Cause A theory on what brought the universe into existence.
★
Why the Universe Exists – the Short Answer
★
Where did the Universe come from?
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