What is the origin of 'sleep tight'? One of the mysteries of the English language finally explained.
The moon doesn't glow in a very real sense. It reflects the Sun's light. (Or the Earth's light if you're not on Earth and in the right position.) As Quora User says, the moon has a high albedo. So it reflects pretty well.
Confidence votes 12. Because it doesn't matter if it is night or day-light from the sun is reflected off the moon to your eyes. The surface of the moon is very light in color and thusly reflects almost all visible light off its surface and at night this is why the moon is very bright. During the day it will appear white or gray because of the sunlight it reflects.