Once upon a time, people got tired of the nameless sky and they put the stars into constellations. They were given names, and a swan, a dragon, and bears flew across the sky.
So much time has passed since then that no one can say why some stars belong to one constellation, while others are very close to another.
But so that the stars do not get bored, you need to put them differently at least once a year. For example, in the constellation of cat-dog, cat-fish and spilled milk.