Astrology is the science that studies the influence from the Cosmos, the Sun, the Moon and the planets on the life of human beings here on Earth. To explain this definition a little more can be said that we start from two principles or basic premises: 1 the Earth is for us, its inhabitants, for the purpose of receiving any kind of cosmic influence, the symbolic center of the universe. It is what is called geocentric or anthropocentric mentality. 2Nd that the Cosmos is a vast ecosystem, within which we have our habitat (the Solar System) and inside our cockpit (planet Earth), in which we live and evolve. Therefore, everything that most directly affects the Earth has vital importance. I.e., planets and stars of our Solar system, members of the same family as the Earth, are that more will we influence. There is an old aphorism that comes to explain everything what you have here is exhibiting.
It tells us that the human being is a microcosm within a macrocosm, or, put otherwise, we are like drops of water in a huge ocean. Any vibration or movement that affects or comes from a part of the ocean, sooner or later will also affect us. Another more specific definition of astrology would be planetary statistics applied, i.e., with more detail, statistics from the effects of the celestial bodies on entities that vary depending on the time. With this definition the Astrology we join two best-known science; Astronomy and statistics. We combine it with astronomy for the simple reason that in astrology we use as starting point or mother of all predictions to so-called letter Astral (or native), representing, in figurative language, photography of the planetary positions in a specific space/time axis. The Charter Astral (or native) is a photograph of the sky, done for the day, the hour and from the concrete place of your birth.