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
Ashton (given name) Ashton (given name) Ashton is a given name derived from an English surname derived from a place name meaning "ash tree town." The name is in use for both boys and girls in the United States. Ashton was used far more often on American females from years 1986–1997. The popularity for girls was from the Terri Garber character "Ashton Main" on 1985's North and South (miniseries). Since Ashton Kutcher's debut on television and film in the late 1990s, the name is now in favor more for boys, as it was always before 1986. Ashton was the 124th most popular name