Saturday, September 4, 2010

The Expansion of the Universe

Images shows Universe from Beginning of Time
Illustration: Time Line of the Universe Credit: NASA/WMAP

From this diagrammed image we can see, "Quantum Fluctuations" at the far left side.  This point represents the very, very beginning of everything just after the Big Bang.  At the very beginning everything was densely packed into a point size that about a million would fit on a pin head .  So, from the beginning the universe energy has been evolving, expanding, and dancing it's way into being and providing.   S. Magyar

13.9 Billion Years Ago
The Origin of the Universe:

Thirteen  plus billion years ago, there was no Universe only  sacred  Energy.

From that place that was no-place,
From that time that was no-time,
From the thing that was no-thing,

All the energy that  would ever exist in the entire course of time erupted from  a  point of what we call energy, smaller than a grain of dust.  It is is the ultimate mystery  of this whole story.  The laws of physics which applied in the begining are not clear,  so it is difficult to know where energy might have come from.  There are several theories  of how the Universe began.  So how could it have begun?

Where did energy come from?  The short answer is  energy  has always been with us since the beginning of the universe and always will be with us.   It just changes form all around us. 

As the Universe expanded after its origin in a Big Bang, the hot soup of fundamental particles (such as free protons and electrons) started to cool down.  This allowed electrons and protons to pair up and form "neutral hydrogen atoms," (i.e. hydrogen atoms with one electron and one proton).  

This process of pairing up is called "Recombination" and it occurred about 400,000 years after the Big Bang.  As the free electrons were now bound to protons, light could travel freely since it was no longer stopped by frequent scattering off the free electrons. 

Until around 400 million years after the Big Bang, the Universe was a very dark place.  There were no stars, and there were no galaxies. Scientists would like to unravel the story of exactly what happened after the Big Bang and reveal the story of the formation of the first stars and galaxies in the Universe. 

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