Moshe Chaim Luzzatto
In Derekh Hashem Section II, chapter 7, Moshe Chaim Luzzatto discusses the influence of stars on humanity and events on earth. There he gives two reasons for the existence of stars and planets. The first is that stars and planets maintain the existence of all physical things on earth, acting as the means by which spiritual forces are transmitted to physical entities. The second is that events on earth are also initiated through planetary and stellar activity. Luzzatto states that each earthly phenomenon is assigned to a specific star, which controls it. Quoting the Talmudic dictum in Sanhedrin 156a – "for Israel, there is no mazal ("luck", literally "planet" or "constellation")", he also states that higher powers (i.e. God or angels) may overcome the influences of this system, and that they typically do so for Jews.
Luzzatto notes that the laws and rules governing this system of astrological influence are extremely complex, and not easily ascertainable through direct observation; thus astrologers are rarely able to predict the future accurately or clearly. The accuracy of their predictions is further reduced by the aforementioned propensity of Divine providence to intervene and override the system. This, Luzzatto states, explains the use of the word me'asher ("something") in Isaiah 47:13 ("Now let the astrologers, stargazers and fortunetellers stand up and tell you something about what will come upon you"); in Luzzatto's view, this means they can tell you something about the future, but not everything.
Read more about this topic: Jewish Views On Astrology