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Photosphere
Star's outer shell from which light is radiated / From Wikipedia, the free encyclopedia
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This article is about the astronomical concept. For the image stitching feature, see VR photography.
Not to be confused with Photon sphere.
The photosphere is a star's outer shell from which light is radiated. It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately 2⁄3,[1] or equivalently, a depth from which 50% of light will escape without being scattered.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/7/76/Sun_diagram.svg/640px-Sun_diagram.svg.png)
![A miasma of plasma](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a4/Highest_resolution_photo_of_Sun_%28NSF%29_as_of_January_20%2C_2020.jpg/640px-Highest_resolution_photo_of_Sun_%28NSF%29_as_of_January_20%2C_2020.jpg)
A photosphere is the region of a luminous object, usually a star, that is transparent to photons of certain wavelengths.