Catch May's Spectacular Earthshine Tonight.
Earthshine, a phenomenon where sunlight reflects off the Earth's surface and illuminates the unlit portion of the Moon, can be seen during specific phases of the lunar cycle. It is most visible during the waxing or waning crescent phase and is caused by sunlight reflecting off the Earth's surface and then being reflected back onto the Moon. Earthshine is also known as the Da Vinci glow and can vary in intensity depending on atmospheric conditions, Earth's reflectiveness, and the observer's location. No special equipment is required to see it, and it can be a great opportunity for lunar photography.