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Actually, Colin, the distance to Betelgeuse is around 640-650 light years, you'll find....and it was also a member of the Orion OB1 association which was (and partly still is) in the vicinity of the present Orion Neb'. Betelgeuse was flung out of the association not long after it formed, around 8-10 million years ago. It's a runaway star. It's traveled about 600-700 light years in that time.
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