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.