Big Bang

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Big Bang Big Crunch
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Table of Contents
Big Bang -Overview -People who lead to the
creation of the Big Bang theory -Evidence/Faults -
Future of the theory Big Crunch -Overview -Evide
nce -Faults -Cool Fact
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Big Bang- Overview

• The Big Bang,
• One possible answer to the creation of the
  universe
• Happened 10-20 billion years ago
• All matter and energy was compacted into a point
• When this point exploded all matter and energy
  created the universe
• It spread all the matter and energy far apart

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History of The Theory of The Big Bang

• 1610, Johannes Kelper
• 1617, Isaac Newton
• 1791, Erasmus Darwin
• 1848, Edgar Allan Poe
• 1910, Vesto Slipher and Carl Wilhelm Wirtz
• Albert Einstein
• 1922, Alexander Friedman
• 1927, Georges Lemaitre
• 1929, Edwin Hubble

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History of The Theory of The Big Bang
-1929, Hubble Milton Humason
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Evidence

• Universe has to have a beginning
• Galaxies appear to be moving from us at speeds
  proportional to their distance.
• If the universe was initially very hot as the Big
  Bang suggest we should be able to find some
  remnants of this heat. Cosmic Microwave
  Background Radiation, this thought to be the
  remnant their looking for.
• Finally, the abundance of the "light elements"
  Hydrogen and Helium found in the observable
  universe are thought to support the Big Bang
  model of origins.

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Faults

• What caused the Big Bang?!?!
• ?

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Future of The Big Bang Theory
The future of The Big Bang theory is OK. It still
is the no. 1 cosmological theory that can explain
a wide amount of things. At on time, though The
Big Bang Theory was about to abandoned. But, with
a major break through in technological advances
with telescopes and the large amount of data
collected by Hubble Space Telescope and the NASA
WMAP telescope saved it.
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Big Crunch
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Big Crunch- Overview
-One possible fate for the universe -Basically
the Big Crunch theory states that as the universe
continues to expand the gravitational pull on all
matter slows the speed of this expansion down
little by little until the expansion will stop.
Then the universe will begin to collapse on
itself(like a black hole sucking everything in)
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Big Crunch- Overview
- This Big Crunch could happen in the next
10-20 billion years.
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Evidence

• The speed of which the universe is expanding at
  does appear to be slowing down, and this maybe
  because of the gravitational pull
• The Big Crunch agrees with that fact that the
  universe is expanding(which it is or appears to
  be) and that the universe has a beginning and an
  end.

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Faults

• Is gravitational pull really strong enough to
  slow down the universes expansion?
• The gravitational pull can only slow down matter
  if it has a high enough density
• - At the moment the density required has not been
  reached

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Cool Fact
- After the Big Crunch, enough kinetic energy is
supposed to be made that it will spawn another
Big Bang!
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Bibliography

• Big Bang Wikipedia. 2007. 12 Oct. 2007
  http//en.wikipedia.org/wiki/Big_Bang
• Big Bang Theory- An Overview All About Science.
  2002-2006. All About Science.Org,
• Inc. 12 Oct. 2007 http//www.big-bang-theory.com
• Big CrunchWikipedia.2007. 12 Oct. 2007
  http//en.wikipedia.org/wiki/big_crunch
• History of the Big Bang TheoryWikipedia. 2007.
  12 Oct. 2007 lthttp//en. wikipedia.org/wiki/histor
  y_of_the_big_bang_theorygt
• Keohane, Jonathan.As an AstrophysicistImagine.gs
  tc.nasa.gov. 1997-2007. 12 Oct.2007
• http//imagine.gstc.nasa.gov/docs/ask_astro/answe
  rs/9711

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ACTiViTY!!!