Explanation:

The Gupta period witnessed a brilliant activity in the sphere of mathematics, astronomy, astrology and medicine. Aryabhatta was a great mathematician and astronomer. He wrote the book Aryabhatiya in 499 A.D. It deals with mathematics and astronomy. It explains scientifically the occurrence of solar and lunar eclipses. Aryabhatta was the first to declare that the earth was spherical in shape and that it rotates on its own axis. However, these views were rejected by later astronomers like Varahamihira and Brahmagupta. Varahamihira composed Pancha Siddhantika, the five astronomical systems. He was also a great authority on astrology. His work Brihadsamhita is a great work in Sanskrit literature. It deals with a variety of subjects like astronomy, astrology, geography, architecture, weather, animals, marriage and omens. His book Brihadjataka is considered to be a standard work on astrology.