The Catholic Church has been highly suppressive of the attribution of any sort of influence of a particular nature to the activity of the planets. This is on two major premises:
1. Astrology is all invented fiction, and belief to the contrary is an invitation for the delusions of the devil. Indeed, a very large amount of the earliest Christian-era demonology texts rely heavily upon astrology.
2. Astrology is historicallty a major principle behind the organization of the State, which was also historically "idolatrous." All the great nations, whose knowledge of astrology was so vast, were to be regarded as barbaric and ignorant, their ways and lore to be discarded.
The Church encouraged astronomy until it became dangerous to their position in regard to the supremacy of mankind, but in general it supports astronomy as a valid and not-sinful pursuit. The Bible itself speaks often of seasons and several times of astronomy, but astrology is nonexistent within it.
Nonetheless the Church preserves some of the very finest astrological archives. There are truly rare gems of art, math, and language kept deep in the Church's vaults and many are available to their scholars. The study of astrology is not sinful, but to apply it diligently to your life (according to them) leads to moral decay.
Other religious groups have differing views. It's perfectly acceptable to Allah!
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