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Why does the sun have such a clear boundary, in this photo? Is there an actual surface of stuff where matter changes phase or density, and over what kind of di
by gorgoiler 5y ago
Why does the sun have such a clear boundary, in this photo? Is there an actual surface of stuff where matter changes phase or density, and over what kind of distance does that change happen?
- pvg 5y agoMore or less, yes - the googlable term for it is 'photosphere' https://en.wikipedia.org/wiki/Photosphere https://en.wikipedia.org/wiki/Photosphere there's also a bit of an illusion of scale, you're looking at bumps and protrusions that are multiple-earth-diameters-sized.
- gorgoiler 5y agoThank you! I suppose the spherical shape around a gravity well, from where the majority of an object’a photons originate, is correctly called a photosphere. I am currently standing on Earth’s photosphere!