The "surface" of a star is composed mainly of hydrogen and helium in a plasma state, which is usually far less dense than Earth's air at sea level. What term do we use to describe this surface?

The photosphere is the outer shell of a star that radiates light. The word is derived from Ancient Greek and translates to "light sphere," referring to the fact that a spherical surface is believed to produce light.

Asked by Vasilii Kulev · Last updated 4 years ago · 2K views · SOURCE