Planets affect us through resonance and correspondence. The constellation of qualities particular to each planet can be found in a host of related earthly phenomena. For instance, Saturn is associated with ancient ruins because everything old, traditional or historical resonates with Saturn’s nature.
Many things are mixtures of planetary influence but usually one attribute will stick out and it is the planet most strongly associated with that attribute (eg, old = Saturn; gold = Sun) which is said to “rule” that object, process, creature or event.
Astrology subscribes to the “everything is interconnected” worldview which dominated Western thought until the end of the 17th Century, when so-called “Natural Philosophy” stripped creation of its sentience and nature of its living web of interdependence. It took modern physics to rediscover the web of interconnection. We are all – humans, animals, plants and angels – interconnected. What affects one, affects all.
It is a profound democracy.