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[[Image:Universe expansion.png|right|thumb|250px|According to the Big Bang theory, the universe emerged from an extremely dense and hot state called the ''original singularity''.]]  

[[Image:Universe expansion.png|right|thumb|250px|According to the Big Bang theory, the universe emerged from an extremely dense and hot state called the ''original singularity''.]]  

[[Image:End of universe.jpg|right|thumb|250px|According to the Big Bang theory, the 3 possible geometry of the universe depends on value of the ''[[cosmological constant]]''.]]

[[Image:End of universe.jpg|right|thumb|250px|According to the Big Bang theory, the 3 possible geometry of the universe depends on value of the ''[[cosmological constant]]''.]]

The '''Big Bang Theory''' is the current dominant scientific hypothesis explaining the acceleration of matter throughout the Universe.  Big bang theories are actually a ''class'' of scientific models that describe the Universe as expanding from a very hot, dense state approximately 16.5 -- although this number has changed many times throughout recent history -- billion years ago. It was first proposed by [[Georges-Henri Lemaitre]] and evidence for the expansion was observed by [[Edwin Hubble]]<ref>Hubble, E. Proceedings of the National Academy of Sciences of the United States of America, Volume 15, Issue 3, pp. 168-173.</ref>. Later [[George Gamow]] predicted that the Big Bang would leave an observable microwave background radiation (or CMBR). This radiation was subsequently discovered by Arno Penzias and Robert Wilson at [[Bell Labs]] and found to be close to that predicted by Gamow (Gamow predicted a background radiation level equivalent to a roughly 3&nbsp;K black body object, and the observed level is that of a 2.725&nbsp;K body). Pensiaz and Wilson were awarded a Nobel Prize in 1978 for their work.

The '''Big Bang Theory''' is the current dominant scientific theory explaining the acceleration of matter throughout the Universe.  Big bang theories are actually a ''class'' of scientific models that describe the Universe as expanding from a very hot, dense state approximately 13.7 billion years ago<ref>[http://map.gsfc.nasa.gov/m_uni/uni_101age.html WMAP Cosmology 101: Age of the Universe]</ref> (although this number has changed several times throughout recent history). It was first proposed by [[Georges-Henri Lemaitre]] and evidence for the expansion was observed by [[Edwin Hubble]]<ref>Hubble, E. Proceedings of the National Academy of Sciences of the United States of America, Volume 15, Issue 3, pp. 168-173.</ref>. Later [[George Gamow]] predicted that the Big Bang would leave an observable microwave background radiation (or CMBR). This radiation was subsequently discovered by Arno Penzias and Robert Wilson at [[Bell Labs]] and found to be close to that predicted by Gamow (Gamow predicted a background radiation level equivalent to a roughly 3&nbsp;K black body object, and the observed level is that of a 2.725&nbsp;K body). Pensiaz and Wilson were awarded a Nobel Prize in 1978 for their work.

The term "Big Bang" implies an explosion of matter into pre-existing space, but the theory actually indicates that space is dynamic and more space is constantly created in the interstices between particles as the density of the universe falls.  In other words, the Big Bang describes the expansion of space and time.  Big Bang theorists state that the Hubble [[redshift]] is a consequence of this stretching of the fabric of space.

The term "Big Bang" implies an explosion of matter into pre-existing space, but the theory actually indicates that space is dynamic and more space is constantly created in the interstices between particles as the density of the universe falls.  In other words, the Big Bang describes the expansion of space and time.  Big Bang theorists state that the Hubble [[redshift]] is a consequence of this stretching of the fabric of space.

==Creationist and Theistic Evolutionary Views==

==Creationist and Theistic Evolutionary Views==

Young earth creationist scientists contest the Big Bang Theory stating that it is scientifically unsound  

Young earth creationist scientists contest the Big Bang Theory stating that it is scientifically unsound.

<ref name="BB Critique">Thompson, Bert, Harrub, Brad, and May, Branyon [http://www.apologeticspress.org/modules.php?name=Read&cat=1&itemid=22 The Big Bang Theory—A Scientific Critique] ''Apologetics Press'', May 2003 - 23[5]:32-34,36-47.</ref>

<ref name="BB Critique">Thompson, Bert, Harrub, Brad, and May, Branyon [http://www.apologeticspress.org/modules.php?name=Read&cat=1&itemid=22 The Big Bang Theory—A Scientific Critique] ''Apologetics Press'', May 2003 - 23[5]:32-34,36-47.</ref>

<ref>Brown, Walt, 2001, [http://www.creationscience.com/onlinebook/AstroPhysicalSciences16.html Big Bang?]</ref><ref>http://www.apologeticspress.org/articles/309</ref><ref>http://www.apologeticspress.org/articles/2047</ref><ref>http://www.icr.org/article/343/</ref>  

<ref>Brown, Walt, 2001, [http://www.creationscience.com/onlinebook/AstroPhysicalSciences16.html Big Bang?]</ref><ref>http://www.apologeticspress.org/articles/309</ref><ref>http://www.apologeticspress.org/articles/2047</ref><ref>http://www.icr.org/article/343/</ref>