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Post InfoTOPIC: Time Warp or Expansion?
Posted By: Sundog

Posted On: Jan 3, 2009
Views: 884
Time Warp or Expansion?

I'm not a studied cosmologist so bear with me if this question has a simplistic answer, but I really don't understand.
IF - The universe is only 13.7 billion years old
AND - We can observe objects that existed 13 billion years ago
IT MEANS - that these objects were 13 Billion light years away from us, 13 billion years ago.

I'm referring specifically to "Burst GRB 050904" which was a cosmic explosion that was detected near the edge of the visible universe. GRB 050904 is said to have occurred 13 billion years ago. It was observed on 4 sept 2005 and it lasted only 500 seconds. This means that in 2005 it was 13 billion light years away.

How did it get there other then by traveling at the speed of light for 13 billion years after the Big Bang? The only other alternative is that during the almost infinitly short "Expansion Period" in the timeline of the Big Bang - it instantly distributed all energy and matter in space time to essentially where it is today.

I can't fathom how either can be true.


Posted By: Keith Mayes

Posted On: Jan 7, 2009
Views: 871
RE: Time Warp or Expansion?

According to the Big Bang theory, the universe started off the size of an atom, or there abouts. It is only because the universe has been expanding ever since that objects are now billions of light years away.
With ever more powerful telescopes we are able to look deeper into space and see back billions of years. Yes, the light we see has taken a long time to reach us, and the full explanation goes way above my head. Hope that helps a little.


Posted By: sundog

Posted On: Jan 7, 2009
Views: 868
RE: RE: Time Warp or Expansion?

Keith,
Thanks for the reply - I've been trying to bring myself up to speed on things like the big bang timeline, size of the universe, rate of current expansion etc. I can find a lot of material targeted to a 12 year old, and a lot targeting a Physics PhD. But little is available that targets a curious Business Major.

Right now I'm pondering the center of the universe. Not the "observable" universe, I mean the center of Reality.

The Reader's Digest version…...yes there is a real center. Just like the ant on the balloon...unable to observe any boundaries, thus no center in 2D. Yet the real center of that universe actually did exist in 3D, at the core of the balloon, equidistant from all of the ant’s observable points on the surface.

Perhaps the center of our observable 3D universe can be found at the core of the 4th dimension...time. Equidistant from all the infinite number of points in 3D space. And it never changes, just like the center core of the expanding balloon. Somewhere between how long universe was, and how long it’s going to be?? Perhaps now is the center of reality.

But back to the real reason for my post. Do you believe in the “inflation period” in the big bang time line? To me it demands that one suspend reasonable doubt. I don’t buy it. And if you refute the Inflation Period, how the heck did everything get so far apart so quickly?




Posted By: Keith Mayes

Posted On: Jan 7, 2009
Views: 866
RE: RE: RE: Time Warp or Expansion?

It has to be remembered that the Big Bang theory IS only a theory. Its the only one we have at the moment that explains the things we observe, and it does it remarkably well. Every new discovery seems to confirm it, so far so good. However, there are still a lot of questions and in oder to explain them boffins come up with additional explanations that appear to explain certain phenonomon. For example the inflation period, dark energy, missing mass etc. Now as to whether or not these explanations are correct, we have no way of knowing.I am way too dumb to follow either the maths or the reasoning and have to trust they know what they are talking about. This is an exciting period in history, a lot is being discovered and a lot is still unanswered.
Will we ever have all the answers?


 

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