1 Answer | Add Yours
The photosphere is the portion of the sun we can see from Earth. Although the sun is a star made entirely of gas, the photosphere can be thought of as the "surface" of the sun.
In answer to your question, I would say photosphere is to the sun as surface is to Earth (or other terrestrial planet).
We’ve answered 319,814 questions. We can answer yours, too.Ask a question