Surah Yunus, Ayat 76-77

Ayat 76. So when came to them the truth from Us, they said: "This is indeed clear magic."

Ayat 77. Musa (Moses) said: "Say you (this) about the truth when it has come to you? Is this magic? But the magicians will never be successful." 

Hazrat Ibn `Abbas (May Allah be pleased with them) said: The Messenger of Allah  [SAWW](PBUH) said, "He who acquires a branch of the knowledge of astrology, learns a branch of magic (of which he acquires more as long as) he continues to do so.'' [Abu Dawud Hadith # 3905].

Lesson : as mentioned above in Surah Yunus Ayat 77. "Is this magic? But the magicians will never be successful." In this Hadith, astrology has been regarded a part of magic. In Islam the learning of magic has been held equivalent to infidelity. Thus, it is evident that in Islam, astrology and soothsaying are highly dangerous, and learning them is a great sin. Astrology here stands for that pseudo-science on the basis of which future events are predicted with reference to the movements of stars. There is another science called astronomy by means of which timings of sunrise and sunset are calculated. This branch of science, however, is a genuine science because it is based on experiment and observation.