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- From: buell@phyast.nhn.uoknor.edu (Jim Buell)
- Subject: Re: Modelling the expanding universe?
- Originator: news@kittyhawk.ecn.uoknor.edu
- Sender: usenet@constellation.ecn.uoknor.edu (Usenet Administrator)
- Message-ID: <buell.727735237@phyast.nhn.uoknor.edu>
- Date: Fri, 22 Jan 1993 20:40:37 GMT
- References: <C18vH2.6vJ@well.sf.ca.us>
- Nntp-Posting-Host: kittyhawk.ecn.uoknor.edu
- Organization: Engineering Computer Network, University of Oklahoma, Norman, OK, USA
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-
- metares@well.sf.ca.us (Tom Van Flandern) writes:
-
-
- > I am posting the following E-mail by request of its sender:
-
- >---------------------------------------------------------------------------
- >From buell@phyast.nhn.uoknor.edu Thu Jan 21 07:51:07 1993
- >Date: Thu, 21 Jan 93 09:51:41 CST
- >From: buell@phyast.nhn.uoknor.edu (Jim Buell)
- >Organization: Dept. Physics & Astronomy, The University of Oklahoma
- >To: metares@well.sf.ca.us
- >Subject: Re: Modelling the expanding universe?
- >Newsgroups: sci.astro
- >References: <C12MDE.675@csulb.edu> <C13sH3.1xL@well.sf.ca.us>
-
- >In sci.astro you write:
-
- >>dpalmer@csulb.edu (David Palmer) writes:
-
- >>> is a solar system (or other volume of space less than a few cubic light
- >>> years) too small to show a measureable effect? If so, this would seem
- >>> to fit the observation that the more distant the object, the greater the
- >>> apparent recession from the observer.
-
- >> [TVF] If that same rate, 50-100 km/s/Mpc, is prorated down to solar
- >> system dimensions, no such expansion is seen in planetary orbits. The
- >> question we are discussing is, why not? -|Tom|-
-
- >We can't see it because you can't go about solving GR for the solar
- >system in the same way you do for the Universe. In the universe you
- >have to postulate that no matter where you are the Universe will look
- >the same. If you go to another galaxy most of the other galaxies will
- >appear to be receding from you. However in the solar system you can't
- >make the same assumption since there is a prefered coordinate system
- >with the Sun at the center.
- >>--
- >> Tom Van Flandern / Washington, DC / metares@well.sf.ca.us
- >> Meta Research was founded to foster research into ideas not otherwise
- >> supported because they conflict with mainstream theories in Astronomy.
-
- >Jim Buell
- >---------------------------------------------------------------------------
-
- >Here is my reply:
-
- > Jim, what you say is true, but seems irrelevant. If we take the
- >center of the local supercluster, we have a preferred frame in which Hubble
- >expansion does occur. So what's the connection between choice of frame and
- >whether or not expansion occurs? -|Tom|-
-
- Actually I hadn't thought about this a great deal before this.
- I think that the angular momentum makes the center of the solar system
- (Start over) The angular momentum of the solar system makes the Sun the
- at the origin the prefered coordinate system. As for the local supercluster,
- the way I always understood it was that the Hubble expansion does affect it
- but that there is also a strong effect due to gravitational fields
- generated by the cluster itself. I'll have to look into this somemore
- at a later date.
- And thank you for posting my post.
- Jim Buell
-
- >--
- >Tom Van Flandern / Washington, DC / metares@well.sf.ca.us
- >Meta Research was founded to foster research into ideas not otherwise
- >supported because they conflict with mainstream theories in Astronomy.
-