In the dense earth’s atmosphere, the average path length of molecules is very small and the trajectories of molecules are straight lines. In an extremely rarefied lunar atmosphere, the average path of molecules is 10 to 100 times the radius of the moon. Atoms and molecules move in elliptical orbits, with the Moon at one of the focuses.
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.