Make a conclusion about the three-dimensionality of outer space by the nature of the motion of cosmic bodies

Only in three-dimensional space are both bound (stable) and unbound (unstable) motions possible, which are realized in the observable Universe. Only in three-dimensional space can there be structures based on electromagnetic interaction (atoms), and structures based on gravitational interaction (planetary and stellar systems).

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.