The lower limit of the heights of artificial earth satellites is about 200 km, and the artificial satellites of the moon flew

The lower limit of the heights of artificial earth satellites is about 200 km, and the artificial satellites of the moon flew at an altitude of only about 15 km. Why did the heights of satellites and ISL differ so sharply?

An artificial satellite of the Earth cannot move at altitudes less than 200 km, since, due to the resistance of the atmosphere, its lifetime will be short (several days or even several hours). The maximum altitude of the ISL flight is determined, first of all, by the mountainous relief, since there is no atmosphere on the Moon.

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.