The Big Bang Theory - Free Essays, Free Term Papers, Free Book Reports etc. The Datacom Ad Network Essay Link Database - Free Papers, Essays, Book Reports, Term Papers Etc. It is always a mystery about how the universe began, whether if and when it will end.
Astronomers construct hypotheses called cosmological models that try to find the answer.
However, through many observational evidences, the Big Bang theory can best explain the creation of the universe. The Big Bang model postulates that about 15 to 20 billion years ago, the universe violently exploded into being, in an event called the Big Bang. The Big Bang was the start of time and space. The matter and radiation of that early stage rapidly expanded and cooled. Several million years later, it condensed into galaxies.