The Big Bang Ian Cintron and Rebecca Sekban. What is the big bang? It is a cosmology theory of the universe. The big bang theory is a theory based on.

The Big Bang

Ian Cintron and Rebecca Sekban

What is the big bang?

• It is a cosmology theory of the universe.• The big bang theory is a theory based on

observation and scientific evidence. • A common misconception is that the Big Bang

theory does not explain how the universe was created but rather how it was once such a small piece of space.

Big Bang

• The big bang was a large explosion.• It was a explosion of space, and it exploded

within itself.• Temperatures and density were really high.

Big Bang

• Within the first few days of the universe, it was in equilibrium.

• The universe cooled to a temperature where photons can not be created or destroyed.

Big Bang

• The theory began in 1912 American astronomer Vesto Slipher while observing a spiral galaxy, found a nebula moving away from Earth.

Big Bang

• In 1924, Edwin Hubble measured the distance of the nebula. He discovered that they were actually out of the Milky Way. Meaning that there was more then one galaxy.

• This meant that one point in time the universe was contained in on single point in space.

Big Bang

• In 1931, Lemaitre, extrapolated the matter of the universe would reach an infinite density and temperature at a finite time in the past.

• This means the universe must have begun in an incredibly small, dense point of matter - a "primeval atom."

Big Bang

• Fred Hoyle is responsible for the name “Big Bang” but he used it dismissively.

Cosmic Microwave Background

• CMB is left over radiation from the Big Bang.• This radiation fills the universe in the dark space.• It is the most important distinction between The Big

Bang and other creation theories.

Common Questions about the Big Bang

• What existed before the Big Bang?• What caused the Big Bang?• Is our universe the only one?

Video

• Big Bang

Works Cited

"The Big Bang." NASA Science. Web. 19 Apr. 2011. <http://science.nasa.gov/astrophysics/focus-areas/what-powered-the-big-bang/>.

"THE BIG BANG." University of Michigan. Web. 19 Apr. 2011. <http://www.umich.edu/~gs265/bigbang.htm>.

"Big Bang." Wikipedia, the Free Encyclopedia. Web. 19 Apr. 2011. <http://en.wikipedia.org/wiki/Big_Bang>.

"HowStuffWorks "How the Big Bang Theory Works"" Howstuffworks "Science" Web. 19 Apr. 2011. <http://science.howstuffworks.com/dictionary/astronomy-terms/big-bang-theory.htm>.