Astrology is a type of divination that consists in forecasting earthly and human events by means of observing and interpreting the fixed stars, the Sun, the Moon, and the planets. As a science, astrology has been used to predict or affect the destinies of individuals, groups, or nations by an assumed understanding of the influence of the planets and stars on earthly affairs. As a pseudoscience, astrology is considered to be diametrically opposed to the findings and theories of modern Western science. Among the Chaldeans worship of stars was not a rarity.

Islam is against such interpretations. There is no mention whatsoever in the Qur'an to justify the existence and plausibility of astromancy, divination by means of the stars. Only God knows the future.

It is We Who have set out the zodiacal signs in the heavens, and made them fair-seeming to (all) beholders. It is We Who have set out the zodiacal signs in the heavens, and made them fair-seeming to (all) beholders (71/15-16)

And marks and sign-posts; and by the stars (men) guide themselves.(16/16)

As one may well observe from above the Qur'an does provide us with astronomical knowledge but there is not even a single verse about astrology which cannot be reconciled with Islam anyhow. Fortune telling is a sort of attribution of partners to God.

CONSTELLATIONS

Constellation is, in astronomy, any of certain groupings of stars that were imagined-at least by those who named them-to form conspicuous configurations of objects or creatures in the sky. The sun is just one of the approximately 200 milliards of stars forming the Milky Way. Such galaxies whose number is estimated to be about 200 milliards are themselves formed of constellations and stars. The Zodiac is formed of the following 12 constellations: zodiac, zone of the sky that includes about 8 degrees on either side of the ECLIPTIC. The apparent paths of the sun, the moon, and the major planets all fall within this zone. The zodiac is divided into 12 equal parts of 30 degrees each, each part being named for a CONSTELLATION and represented by a sign. Because of the PRECESSION OF THE EQUINOXES, the equinox and solstice points have each moved westward about 30 degrees in the last 2,000 years; thus the zodiacal constellations, which were named in ancient times, no longer correspond to the segments of the zodiac represented by their signs.).

Ptolemy, Greco-Egyptian mathematician and geographer was the last great astronomer of ancient times. He systematized and recorded the knowledge of Alexandrian men of science. His theory led to the idea that human beings were under the influence of stars. Constellations governed them and form the principal traits f their characters. According to the Chaldeans the universe was governed by stars from whom both and good originated. The Sabeans, a branch of the aforementioned Chaldeans believed that the heavenly bodies were live beings and had just like men intelligence and had sovereignty over the destinies of the human beings. On the other hand, the Indian astrologists had formulated their conclusions basing on the size and distance form earth of the stars, Saturn being, for instance the source of happiness. (See Divantaş İlmihal II, p. 150)

GOD THE CREATOR THE ONLY SOVEREIGN

To Him is due the primal origin of the heavens and the earth: When He decreeth a matter, He saith to it: "Be," and it is. (2/117)

Knowest thou not that to Allah belongeth the dominion of the heavens and the earth? And besides Him ye have neither patron nor helper. (2/107)

God who created heaven and earth has imposed His law. Unto Allah belongeth the dominion of the heavens and the earth. He giveth life and He taketh it. Except for Him ye have no protector nor helper. (9/116) God is the only entity master of the universe. To believe that all the good and the evil things come from heavenly bodies is illogical.

Every human being comes to the world with his/her idiosyncratic characters; who has to carry them with them in the entire course of them lives. Astrologers' conjectures as to the similarities of persons born under the same stars have been proved not have the same destiny. In whatever Form He wills, does He put thee together. (82/8) No heavenly body has been entrusted with the governance of human beings. Everything is God's doing, to think otherwise would be to attribute partners to God.

ONLY GOD KNOWS WHAT THE FUTURE WILL BRING

Say: None in the heavens or on earth, except Allah, knows what is hidden: nor can they perceive when they shall be raised up (for Judgment). (27/65)

With Him are the keys of the unseen, the treasures that none knoweth but He. He knoweth whatever there is on the earth and in the sea. Not a leaf doth fall but with His knowledge:… (6/59)

The Unseen cannot be perceived or grasped by senses or intelligence. No one knows when and where one will die; such secrets have not been shared with any other creature, including prophets.

Astrology has become of fashion nowadays; as had been in prehistory. Fortune telling is not compatible with the data of the Qur'an and is contrary to its dictates.

OTHER DIVINATION METHODS

O ye who believe! Intoxicants and gambling, (dedication of) stones, and (divination by) arrows, are an abomination,- of Satan's handwork: eschew such (abomination), that ye may prosper. (5/90)

Divination is foreseeing future events or obtaining secret knowledge through divine sources, omens, or oracles. It is based on the belief that revelations are offered to humans in extrarational forms of knowledge: ancient Chaldeans studied birds' flight and patterns in water or entrails; the Greeks put their trust in the oracle. Present-day forms of divination include crystal gazing, palmistry, and astrology.

People who give credence to such practices are exploited by false 'prophets' and injure their own spirit. Say: "O Allah. Creator of the heavens and the earth! Knower of all that is hidden and open! it is Thou that wilt judge between Thy Servants in those matters about which they have differed." (39/46)

Verily the knowledge of the Hour is with Allah (alone). It is He Who sends down rain, and He Who knows what is in the wombs. Nor does any one know what it is that he will earn on the morrow: Nor does any one know in what land he is to die. Verily with Allah is full knowledge and He is acquainted (with all things). (31/34)

Had fortune tellers and seers been better advised they would know the results of lotteries and derive a huge fortune from their practice.