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.
This is what causes day and night - one side of the Earth is facing the sun - so it's light, and the other doesn't - so it's dark. The sun lights the moon and that is why at night we see the moon. The sun radiates energy and warms up the Earth. Without that energy the life on our planet will not be possible. The Moon is Earth's natural satellite and it revolves around the Earth, like the Sun revolves around the Sun. The Moon has a gravitational pull that causes a rise and fall of ocean tides.