Aryabhata was an ancient Indian mathematician and astronomer who lived in the 5th century CE. He is known for his contributions to the study of zero, which he considered to be a number in its own right.

The Surya Siddhanta is an ancient Indian astronomical text that contains information about the positions of stars and planets. It was written by an unknown author in the 5th century CE.

Brahmagupta was an ancient Indian mathematician and astronomer who lived in the 7th century CE. He is known for his work on the Fibonacci sequence, which he discovered independently of Fibonacci.

The Jantar Mantar is an ancient Indian astronomical observatory that was built in the 16th century CE. It is located in Jaipur, Rajasthan.

Bhaskara II was an ancient Indian mathematician and astronomer who lived in the 12th century CE. He is known for his work on the decimal system, which he developed independently of the Chinese.

The Graha Siddhanta is an ancient Indian astronomical text that contains information about the eclipses of the sun and moon. It was written by an unknown author in the 8th century CE.

Varahamihira was an ancient Indian mathematician and astronomer who lived in the 6th century CE. He is known for his work on the concept of infinity, which he discussed in his book, the Brihat Samhita.

The Gnomon is an ancient Indian astronomical instrument that was used to measure the altitude of celestial objects. It is a simple device that consists of a vertical rod with a horizontal crossbar.

Brahmagupta was an ancient Indian mathematician and astronomer who lived in the 7th century CE. He is known for his work on the concept of negative numbers, which he discussed in his book, the Brahmasphuta Siddhanta.

The Brihat Samhita is an ancient Indian astronomical text that contains information about the zodiac signs. It was written by Varahamihira in the 6th century CE.

Bhaskara II was an ancient Indian mathematician and astronomer who lived in the 12th century CE. He is known for his work on the concept of irrational numbers, which he discussed in his book, the Lilavati.

The Sundial is an ancient Indian astronomical instrument that was used to measure the time of day. It is a simple device that consists of a vertical rod with a horizontal crossbar.

Bhaskara II was an ancient Indian mathematician and astronomer who lived in the 12th century CE. He is known for his work on the concept of calculus, which he discussed in his book, the Siddhanta Shiromani.

The Graha Siddhanta is an ancient Indian astronomical text that contains information about the planets. It was written by an unknown author in the 8th century CE.

Bhaskara II was an ancient Indian mathematician and astronomer who lived in the 12th century CE. He is known for his work on the concept of trigonometry, which he discussed in his book, the Siddhanta Shiromani.