Quote:
Originally posted by juju
Why did it have to come from something?
Perhaps it has always existed.
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Astronomers can actually look out 12-14 billion light years into the outer reaches of the universe, and they are in effect looking back into time and seeing a period very shortly after when the Big Bang is believed to exist.
What they see there is a uniform source of microwave radiation from every single point in the sky. This background radiation is one major piece of evidence for the big bang.
This radiation was first predicted to exist by hypothesis, and then the evidence was found showing that it does indeed exist. When a scientist's equations predict something, and this prediction is shown to match facts that are gathered later, that is usually a good sign that this scientist is on the right track.
one article on the web discussing this is
http://map.gsfc.nasa.gov/m_uni/uni_101bbtest3.html