Jyotish Shastra' i.e Astrology is very popular in India. Jyotish comes from the Sanskrit word jyotisha, which means "science of light". Astrology *(jyotish) is the study of the movements of the planets, sun, moon, and stars, and the belief that these movements can influence people's lives. Jyotisha also includes the study of astronomy and the science of timekeeping using the movements of astronomical bodies. In ancient India, jyotish was used to determine the dates of sacrifices and other purposes. We have a famous shlokas pertaining to the concept of astrology.
अप्रत्यक्षाणि शास्त्राणि विवादस्तत्र केवलं|
प्रत्यक्षं ज्योतिषं शास्त्रं चन्द्रार्को यत्र साक्षिणो||
Apratyakshaani shaastraani vivadastatra kevalam.
Pratyaksham jyotisham shastram chandraarko yatra saakshino.
Apratyakshaani = invisible.
Shaastraani = various scientific and other disciplines of knowledge.
Vivadastatra = vivaadah + tatra.
Vivaad = controversy, dispute.
Tatra = there
Kevalam = only.
Pratyaksham = visible, self evident.
Jyotisham = Astronomy.
Shastram = science.
Chandraarko = Chandra + Arko.
Chandra = the Moon.
Arko = the Sun.
Yatra = where.
Saakshino = eye witnesses.
The shlokas signifies that "In those disciplines of Science and other allied subjects, where end results of a concept are not visible or are doubtful, there is always some controversy or dispute. But in the case of Astronomy it is not so, because the Moon and the Sun act as an eye-witness to prove the correctness of the concepts.
Astrology in India has two branches,the one which is most scientific and based on the movement of the Sun, Moon and other planets, as codified by our Rishis (sages) thousands of years ago through minute observations without the help of advanced instruments as now available, and the other branch as its off shoot is the prediction of the future of a person by drawing a natal chart of the planets at the time of birth of a person,called a horoscope. The latter's deductions of future are always subject matter of disputes and it is not considered scientific. But in the case of Astronomy the predictions about solar and lunar eclipses and other matters are always correct, as they are based on sound scientific principles, and the Sun and Moon prove the correctness of the theory of the subject.
This fact has been beautifully highlighted in the above verses