Violent explosion
Big bang theory,
a
general theory held by many astronomers that the universe may have originated
about 12 to 15 billion years ago as the result of a violent
explosion of some primordial mass; since then the universe has been
expanding and evolving; a refinement of the theory states that the universe
pulsates, expanding and contracting every 80 billion years . see also Steady-state theory
Chaos, in Greek
mythology, most ancient of the gods; lord of disorder; with wife Nyx (Night)
ruled formless Earth in its beginning; father of Erebus and Nox.
Chaos theory, in mathematics
and mechanics, theory that studies systems behaving unpredictably and randomly
despite their seeming simplicity and fact that forces involved are supposedly
governed by well-understood physical laws; applications of theory are diverse,
including study of turbulent flow of fluids, irregularities in heartbeat,
traffic jams, population dynamics, chemical reactions, plasma physics, and
motion of star clusters; theory was first motivated by recent developments in
computers.