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Astronomers Find the Edge of the Milky Way
(skyandtelescope.org)
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I don't think that line necessarily refers to anything going on in the core, but rather "of stars on the outside, the furthest ones are the oldest".
I'm not sure I follow you here, but just to be sure, I'm talking about this image here:
Was that also what you were looking at?
Yeah. And the oldest stars overall are indeed in the galactic centre.
But the specific bit you quoted I read as "of the old stars on the outside, the outermost are the oldest".
Ah okay, I get you. Reading it back again it does indeed seem to be that this is what they mean.
Thanks. ๐