Gaze up into the sky in the coming days, and you might catch a glimpse of the Da Vinci glow.
It’s a phenomenon that can happen around sunset when a crescent moon is on the horizon, but the outline of a full moon is visible behind it.
The Da Vinci glow is a common occurrence, and easy to see.
But its appearance was once an inscrutable mystery.
What caused that ghostly full moon effect, sometimes called “the old moon in the new moon’s arms,” was an ancient question illuminated by Leonardo da Vinci, according to NASA.
And the answer is light reflecting off of the Earth onto the moon.
Distinct from sunshine, EARTHSHINE refers to light from the sun reflected by Earth even after the sun sets.
Earthshine is about 50 times brighter than the light from a full moon. (CNN)
The wonders of our world!
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