Re: WMAP: New Satellite Data On Universe's First Trillionth Second

David Thomson wrote:

It would be helpful if the scientists could tell us how we got here 12
billion years before the light from the early explosion did.


Pretty simple really... Because of the finite speed of light (actually
the cosmic speed limit for all interactions), when you look at the moon,
you see it as it was roughly 1.5 seconds ago, the sun about eight
minutes, the Andromeda Galaxy (M31) about 2.3-2.5 million years ago.
And the CMB about 13.7 billion years ago.

For some cleaver creatures at a distance of 4.6 billion light years
that might be observing stellar birth regions in our galaxy, they
might be watching the your star (our sun) forming with its dark planetary
disk of debris left over from star formation.

No Center
http://www.astro.ucla.edu/~wright/nocenter.html

Also see Ned Wright's Cosmology Tutorial
http://www.astro.ucla.edu/~wright/cosmolog.htm
http://www.astro.ucla.edu/~wright/cosmology_faq.html

WMAP: Foundations of the Big Bang theory
http://map.gsfc.nasa.gov/m_uni.html

WMAP: Tests of Big Bang Cosmology
http://map.gsfc.nasa.gov/m_uni/uni_101bbtest.html
.

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