Theories of Origin of the Universe
The entire universe was formed from a gigantic explosion.
Big Bang theory
Idea that life was created by a divine force or being
Creationism
Universe had no beginning or end, new matter was always created
Steady State Theory
Idea of that living organisms could arise directly from nonliving substances
Spontaneous Generation
The universe underwent an extremely rapid expansion immediately after the Big Bang.
Inflationary Theory
Hypothesis that suggests that life on Earth did not originate exclusively on our planet but rather arrived from outer space.
The universe not only expands but also contracts to a single point and then expands again.
The Oscillating Universe Theory
Idea that offered a viable explanation for the transition from nonliving to living.
Chemosynthetic Theory
Who proposed the Inflationary Theory?
The American cosmologist Alan Guth