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Author Topic:   Motion in an expanding space
johnfolton 
Suspended Member (Idle past 5621 days)
Posts: 2024
Joined: 12-04-2005


Message 13 of 40 (181513)
01-28-2005 9:26 PM
Reply to: Message 4 by Sylas
01-28-2005 7:37 PM


Sylas, If light returns as a curve and the object travels in a straight line, then your galaxies are 70 km/sec/MPsec closer.
If this is the case then d starting out at D will be catching C, B, & passing A. It maybe the galaxies size and distance is inflated too, if light refracts as a curve in space.

This message is a reply to:
 Message 4 by Sylas, posted 01-28-2005 7:37 PM Sylas has not replied

  
johnfolton 
Suspended Member (Idle past 5621 days)
Posts: 2024
Joined: 12-04-2005


Message 18 of 40 (181668)
01-29-2005 1:26 PM
Reply to: Message 14 by Sylas
01-29-2005 4:22 AM


Sylas, Your theory of space expanding appears to me to be just a measurement of the curvature of Space. The objects galaxies are moving in two dimensions, and the light is moving in 3 dimensions. If space is expanding then both light and the object would be moving in 2 dimensions.
You appear to be saying the galaxies are moving in two dimensions away from us at greater and greater speeds. That only the space between the galaxies are exibiting this two dimensional phenomenom of expanding space. I suspect what your actually seeing is how curved space is between the galaxies.
I think the galaxies are closer that they move in two dimensions, and the light that your basing their present distance has returned to earth on the space curve.
Space has thrown you a curve ball, and your scientists are calling it a fast ball. I think you got how fast an object is moving thru space in reverse. The galaxies are moving away from us primarily as a fastball(two dimensions), and its light is returning to us as a curve(three dimensions). Your only looking at it from 2 dimensions so you have this need to have space expanding.
I agree I don't know much about astronomy(you momentarily got my interest), but will have to agree with Einstein on this one.
I'm back to the lurking mode, cause what your saying does not make sense to me, unless were talking two dimensions, then you'd have to come up with expanding space to account for increasing distances.
http://www.phy.syr.edu/...modules/LIGHTCONE/einstein-gr.html
Curvature of Space in Two Dimensions
The idea of a curved surface is not an unfamiliar one since we live on the surface of a sphere. More generally, mathematicians distinguish 3 qualitatively different classes of curvature, as illustrated in the following image (Source):
http://csep10.phys.utk.edu/...2/lect/cosmology/geometry.html

This message is a reply to:
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