Earth shine refers to the dim, indirect light that is reflected from the Earth onto the darkened portion of the Moon's surface during a lunar eclipse. There are several synonyms for Earth shine, including "planet-shine," "lunar glow," and "earthlight." Planet-shine is a more general term used to describe the reflected light from any planet onto the surface of a celestial body. Lunar glow emphasizes the pale, soft light that radiates from the Moon during a lunar eclipse. Earthlight emphasizes the source of the light, the Earth, and evokes a sense of lunar exploration and the view of Earth from space.