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Old 09-July-2009, 12:16 PM
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Quote:
Originally Posted by Jens View Post
In fact, it is changing constantly, so proxima centauri is not the same distance from the earth as it was when I started typing this sentence. Not that it makes a big difference.
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?
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