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The Big Bang is a theory that the universe began in an initial massive explosion.  It is the most popular theory about the origin of the universe.  It was first proposed by [[Georges-Henri Lemaitre]].  More evidence for the Big Bang was found by [[Edwin Hubble]] and [[Bell Labs]].  Although the Big Bang is widely accepted, it is unlikely that it will ever be conclusively proven or disproven.

The Big Bang is a theory that the universe began in an initial massive explosion.  It is the most popular theory about the origin of the universe.  It was first proposed by [[Georges-Henri Lemaitre]].  More evidence for the Big Bang was found by [[Edwin Hubble]] and [[Bell Labs]].   

 

According to the Big Bang, all the matter in the universe existed at a nano-point, and exploded out from that point.  The matter, which was composed of individual [[protons]], [[neutrons]], and [[electrons]], fused together in the massive heat that followed.  [[Gravity]] took over and attracted small particles to larger particles, forming the first elements (only [[hydrogen]], [[helium]], etc.).  These elements in turn formed the first stars.  The first stars, then, acting as giant furnaces and through the process of [[fusion]], fused hydrogen, helium, etc., to create the heavier elements, and spewed them out into the stars. 

 

Heavier elements coalesced to form planets.  On Earth, complex [[amino acids]] formed by the aid of extreme heats, evincing the beginning of life, which proceeded to evolve.  And the rest, they say, is history.

 

For scientific treatment of the big bang: [http://en.wikipedia.org/wiki/Big_bang].