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hilburn t1_irw7atx wrote

Reply to comment by skibble in The vast majority of the 150-400 billion stars in the Milky Way haven't been directly detected. Alpha Centauri is the nearest known star to Sol. What is the probability that there are nearer stars that remain undiscovered? by [deleted]

Proxima orbits AB with a period of ~550,000 years.

So the "sometimes" is a while, and includes for as long as we've been measuring things

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