this post was submitted on 02 Sep 2024
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There are two possibilities I can think of:
Size doesn't say much about mass though.
I thought stars of similar masses were also of similar sizes. They're not?
I'm no astrologer but from what I've learned, we also need to look at the color to glassify stars into categories. It varies a bit though in each category so it's a blunt tool.
Then there are other objects like gas clouds and even galaxies. For those, we have no idea of the density distribution, so radial size gives us even less info.