"Experience the Enchanting Da Vinci Glow on the Crescent Moon"

The "Da Vinci glow," a faint ghostly glow illuminating the whole of the moon, is visible only when there's a crescent moon on the horizon at sunrise or sunset. The glow is not due to the moon illuminating itself, but is created by planet Earth, whose light can illuminate the night sky 50 times more brightly than that of a full moon. The phenomenon is named after Leonardo Da Vinci, who set out to solve the mystery of what was once known as "Earthshine." The best days to see it after sunset are next week on Sunday, May 21; Monday, May 22; and Tuesday, May 23.