There is no scientific reasoning. And there is no need either.
Posted on Quora
Scientific thinking is based on an objective analysis of things as they are (or appear to be) through a theoretical statement that validates experimental facts or observations (or both).
On the other hand, astrology considers the interaction between the phenomenon and the observer. From an astrological point of view, the entire universe and our awareness come together in the same process; that is why we cannot say there is a planetary influence.
Relatively speaking, planets and stars exist separately from our consciousness and, as such, are the subject of scientific investigation. Conversely, astrology undermines the assumption that the physical world exists independently of our observations (as does quantum mechanics). Consequently, astrological factors act as a symbolic mirroring of the reality we belong to, so our nature becomes highly legible through these symbols.