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« on: February 23, 2009, 03:28:27 AM »
I'm not quite sure how the theory of "Celestial Gears" would solve the problem of the same constellations being observed from different locations within the "Southern hemisphere", but not being observed in the North. Using the map given in the FAQ as a reference, surely there must either be duplicate star patterns around the Earth to allow people in South America and Austrailia to observe the same constellations, or there must be something preventing the "North" from observing the "Southern" constellations and vice versa. (from a plain line-of-sight argument if there were no replicated constellations, the same stars should be visible everywhere) Furthermore, I am unsure as to how a "Celestial Gear" model would explain observed proper motion of stars, and the differences between proper motions of different stars. from my limited understanding of the theory, this surely would imply an infinite sequence of gears for each individual star. At the very least, I cannot see any alternative to cogs within cogs in explaining binary stars; their movement relative to each other coupled with their movement relative to other stars and the Earth.
Also, what do you guys think about obseved doppler red shift from galaxies and stars. What causes it?
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