The prevailing theory about the origin and evolution of our Universe is the so-called Big Bang theory. Choose from the links in the left column for discussed at length. This primer in cosmological concepts is organized as follows: The main concepts of the Big Bang theory are introduced in the first section with scant regard to actual observations.
Still, the Big Bang theory wouldn't reign supreme until the 1950s. The fundamental idea behind the theory is that our universe is evolving and changing; it was different in the past, and it will
The meaning of BIG BANG THEORY is a theory in astronomy: the universe originated billions of years ago in a rapid expansion from a single point of nearly infinite energy density. general relativity and the big bang theory. — John Horgan, Scientific American,
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