Space as a Special Frame and Starlight Aberration
Résumé
It is generally accepted that the relevant velocity in the calculation of starlight aberration is the velocity of the Earth in its orbit around the Sun. We contend that, for distant stars or galactic sources which appear fixed over long periods of time, irrespective of their motion, the correct velocity for the calculation is the Earth's velocity relative to space, i.e., relative to the thermal bath of 2.7k Cosmic Microwave Background (CMB). Our result for the starlight aberration constant differs from the commonly accepted value by approximately 0.3 seconds of arc.
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