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Earthshine is a faint, ghostly glow on the unlit portion of the Moon. It occurs when sunlight reflects off Earth’s clouds, oceans, and ice caps to dimly illuminate the lunar surface. This indirect, twice-reflected light is most visible during the slim waxing or waning crescent phases.
Earthshine is a faint, ghostly glow on the unlit portion of the Moon. It occurs when sunlight reflects off Earth’s clouds, oceans, and ice caps to dimly illuminate the lunar surface. This indirect, twice-reflected light is most visible during the slim waxing or waning crescent phases.