F Corona. (Fraunhofer Corona)

Of the white light corona (that is, the corona seen by the eye at a total solar (eclipse), that portion which is caused by sunlight scattered or reflected by solid particles (dust) in interplanetary space. The F corona extends from the solar corona from about two or three solar radii far beyond the Earth into space, so that it can actually be seen at night as a faint glow along the ecliptic, the glow is known as zodiacal light.