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Article #14917

Re: The modified Hubble-relation. Negative Expansion-acceleration of the Universe?

#14917
From: N:dlzc D:aol T:com (dlzc)
Date: Wed, 01 Aug 2007 13:05
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Dear Loius_N:

<Louis_N@edu.herlufsholm.dk> wrote in message 
news:1185968975.751450.270780@w3g2000hsg.googlegroups.com...
...
> My question to all of you:
> Is it ultimately found that the Universe is in an
> accelerated expansion and is it ultimately found
> that the acceleration is positive or can it be that
> the acceleration is negative?

According to standard Big Bang Theory, the Universe initially 
inflated very rapidly, then decelerated to a fairly slow pace for 
a long period of time, then accelerated to what we see now.

> And what are the measured (calculated) values
> of the expansion-acceleration?

http://cfa-www.harvard.edu/~huchra/hubble/

> PS: Is the observed acceleration-anomaly of the Pioneer
> Probes explained by the above considerations?

That is a good thought.  The magnitude is about right, but the 
direction is wrong... rather than ... "expansion" it is 
"contraction", and several "mechanical" candidates for this 
anomalous acceleration.

You might want to peruse this:
http://arxiv.org/abs/astro-ph/0203151

David A. Smith 
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From: "N:dlzc D:aol T:com \(dlzc\)" <dlzc@aol.com>
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Subject: Re: The modified Hubble-relation. Negative Expansion-acceleration of the Universe?
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