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.
Different parts of the moon are illuminated during waxing and waning. In the Northern Hemisphere, the part of the moon that is illuminated will appear to grow from right to left until itâs full, and it will then diminish from right to left. A waxing moon will be illuminated on the right side, and a waning moon will be illuminated on the left side. Hold out your right hand with your thumb out, palm facing the sky. The thumb and forefingers make a curve like a backward C. If the moon fits in this curve, it's a waxing moon (increasing).