Theories of the Origin of the Universe
Theories of the Origin of the Universe - How Do Scientists Explain it?
Various theories of the origin of the universe have been under debate. The Big Bang Theory and its related Inflation Universe Theories (IUTs) are today's dominant scientific theories of the origin of the universe. According to these interrelated hypotheses, the universe was created between 13 and 20 billion years ago from the random, cosmic explosion of a subatomic ball that hurled matter and energy in all directions. Over a period of approximately 10 billion years, this newly created matter and energy evolved into stars, galaxies and planets, including our earth.
During the last 70 years, observational discoveries in the areas of cosmology, astronomy, physics, and mathematics have shown beyond a reasonable doubt that our universe did, in fact, have a beginning. Science now declares that prior to a certain moment in history there was nothing; during and after that certain moment in history there was something -- our cosmos.
Theories of the Origin of the Universe -- How Does Mainstream Science Currently Explain it?
In The Grand Design, Stephen Hawking declares: "spontaneous creation is the reason there is something rather than nothing, why the Universe exists, why we exist." He goes on to say, "Because there is a law such as gravity, the Universe can and will create itself from nothing."
If you think Dr. Hawking sounds a bit simplistic, here are some other mainstream experts on the origin of the universe:
NASA: "The universe was created sometime between 10 billion and 20 billion years ago from a cosmic explosion that hurled matter and in all directions."
U.C. Berkeley: "The big bang theory states that at some time in the distant past there was nothing. A process known as vacuum fluctuation created what astrophysicists call a singularity. From that singularity, which was about the size of a dime, our Universe was born."
Jet Propulsion Laboratory, California Institute of Technology: “Many cosmologists believe that the universe was created about 15 billion years ago with a cosmic explosion they nicknamed the Big Bang. This explosion produced an expanding cloud of the simplest known chemical elements: hydrogen and helium.”
University of Michigan: "About 15 billion years ago a tremendous explosion started the expansion of the universe. This explosion is known as the Big Bang. At the point of this event all of the matter and energy of space was contained at one point. What existed prior to this event is completely unknown and is a matter of pure speculation. This occurrence was not a conventional explosion but rather an event filling all of space with all of the particles of the embryonic universe rushing away from each other."