Thread: does the position of proxima centauri to the sun ever change?
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Old 09-July-2009, 12:31 PM
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Hornblower Hornblower is offline
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Originally Posted by Fiery Phoenix View Post
Is it only because of the proper motion of the stars themselves, though? Or does our movement around the galactic center also play a role?
The orbital motion around the galactic center is the basic cause of all of this. The observed proper motion of a star as seen by us is a result of differences in the orbital motions of the Sun and the observed star.
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