Here are a couple of definitions of the big bang.
""A broadly accepted theory for the origin and evolution of our universe. The theory says that the universe started expanding roughly 14 billion years ago from an extremely dense and incredibly hot initial state.
Page not found – Contemporary Physics Education Project
The primeval explosion which most astronomers think gave rise to the universe as we see it today, in which clusters of galaxies are moving apart from one another. By "running the film backward'' ” projecting the galaxies' motions backward of time ” astronomers calculate that the Big Bang happened about 10 to 15 billion years ago.
Programs-at-a-Glance : EDUCATION : Astronomical Society of the Pacific
The explosion and rapid explansion of matter that occurred at the creation of our universe. In the immediate aftermath of the Big Bang, all matter is thought to have consisted of free quarks and gluons at extremely high temperatures and densities. This plasma then cooled and coalesced into the particles and atoms that now make up all objects in the universe.
http://www.bnl.gov/rhic/glossary.htm
""
I could go on. The theory as it appears above, and what most people believe it to be is flawed.
Flaw : when something explodes, the particles that fly off all spin in the same direction. The direction of the spinning before the explosion. This contradicts what we observe today. Planets and possibly galaxies spinning in completely oppostie directions.
will post more later. Have to go