Photosphere Photosphere The photosphere is a star's outer shell from which light is radiated. The term itself is derived from Ancient Greek roots, φῶς, φωτός/"phos, photos" meaning "light" and σφαῖρα/"sphaira" meaning "sphere", in reference to it being a spherical surface that is perceived to emit light. It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately 2/3, or equivalently, a depth from which 50% of light will escape without being scattered. In other words, a photosphere is the deepest region of a luminous object, usually a star, that is transparent to photons of
A Star Is Torn A Star Is Torn "A Star Is Torn" is the eighteenth episode of "The Simpsons"<nowiki>'</nowiki> sixteenth season. It first aired on the Fox network in the United States on May 8, 2005. Fantasia Barrino guest stars as Clarissa Wellington. After being unable to shop at the Kwik-E-Mart because it is being held up, Lisa suggests the Simpsons have a vegetarian meal with ingredients purchased from a nearby stall, which they enjoy until Bart, Homer, Marge, and Maggie feel queasy and begin vomiting. Because she is a vegetarian, Lisa is immune to the "vitamins, minerals, and trace amounts of bug feces".