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Big Bang

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Joseph venetucci

on 27 April 2010

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Transcript of Big Bang

The Big Bang What is it? The idea that the universe expanded from a single hot, dense, and tiny point that is still expanding today. Humans Earth Galaxy Universe ? Where did the universe come from?

Where did matter come from?

How long has the universe been in existance?
The Big Bang is an explosion. Stars, planets, everything was contained in a point then exploded flinging them around making the universe. The universe was contained (squished) inside a extremely hot tiny point at one time and expanded to what it is today. Think of it as a.... Over time it expanded and continues to. It started out as a small tiny point. As big as the universe now, and always growing. There really is no distance from it to earth (or anywhere else) There is no exact location of it. That distance would keep on expanding, meaning no constanst distance. Galaxies are not expanding but the area around it is. How was it discovered? Many people helped in the discovery of the big bang. Two of the most important are: Georges Lemaitre Belgian catholic priest.
In 1927 he proposed his theory that the universe began with an explosion of a primeval atom.
Primeval meaning the very first.
Based off of Einstein's work.
Also called the "Hypothosis of the Primeval Atom.
Edwin Hubble In 1929 made ovservations that confirmed Lemaitre's ideas.
Founded "Hubble's Law"
A galaxy's velocity is equal to it's distance from us.
Also meaning that the universe is expanding in every direction.
It took the same time for galaxies to get to where they are (Meaning each galaxy had the same ammount of time to move where they are now.)

People have observed using the knowlege of redshifts that galaxies are moving outwards and are accurate to hubbles law. Meaning that if galaxies are moving outwards, they must of been closer together some time ago. Interesting things: Space and time are thought to be contained inside the big bang, not the other way around. The big bang was not an explosion, rather a expansion. There is a sitcom called "The Big Bang Theory" WRONG! How big is it? Distance from Earth ? ? ? ? ? How does it interact with other objects? It's the constantly growning container that keeps everything together. D = 1 S = 1 D = 2 S=2 Present Past Space Time Research suggest the Big Bang started about 13.7 billion years ago. Joseph Venetucci Citing sources: Information from various webpages like: The always trustworthy en.wikipedia.org
University of Michigan www.umich.edu
University of Miami www.bio.miami.edu
Pictures cited
(In order they appeared, no duplicates) delamagente.files.wordpress.com
tammyconnors.files.wordpress.com The End ?
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