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Ranging and Pioneer
Thus spake "John (Liberty) Bell"
Which requires that observers in different directions can all be in agreement about the relative motion of each star, and all be wrong. This strikes me as a little far fetched. That is not exactly right. Each observer has the same systematic error in the orbital motion of each star, and of course the systematic error also affects the orbital velocity of each observer. But what they measure are relative motions, which are of an order of magnitude less than the error in orbital velocity, and actually much less than the random differences between the orbits of stars. After allowing for these differences it would be possible, in principle, to pick up small differences in relative motion. But it would not be easy. Regards -- Charles Francis substitute charles for NotI to email |
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