20.cosmos จักรวาล
The cosmos is the universe considered as
an integrated orderly system. Sometimes the cosmos
is the orderly part of a larger whole, the
other part being chaos. Any account of the origin
of the universe as a whole, whether based on
myth, religion, philosophy, or science is a cosmogony.
An account of the nature and origin of
the universe that is systematic is a cosmology. This
term is used for the particular branch of physics
that considers this question, and also for inquiries
of a more philosophical nature. Cosmological arguments
for the existence of God begin with very
general facts about the known universe, such as
causation, movement, and contingency, and then
argue that God must exist, as first cause, or unmoved
mover, or necessary being, to account for
these facts. The first two ways of proving the existence
of God listed by St. Thomas Aquinas are
cosmological arguments.