Why does the moon change its shape in the firmament?

The moon reflects the light coming from the sun. Therefore, from the Earth we see only that part of the Moon that reflects light. During a new moon, the Loupe reflects light in the opposite direction from the Earth; during a full moon, we see all the light.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.