The Ujjain Observatory, established in the 5th century BCE, was a prominent center for astronomical studies and observations. It played a crucial role in advancing the understanding of solar motion and contributed to the development of accurate calendars.

Jantar Mantar, a remarkable astronomical observatory constructed by Maharaja Jai Singh II, is situated in the city of Jaipur, Rajasthan.

Aryabhata, a renowned ancient Indian astronomer and mathematician, made significant contributions to the field of mathematics, including the development of the concept of zero and the decimal system.

Takshashila Observatory, an ancient center of learning in India, was primarily dedicated to the study of astronomy and celestial phenomena.

Aryabhata, a brilliant ancient Indian astronomer, proposed the heliocentric model of the solar system, which places the Sun at the center, centuries before Copernicus.

Nalanda Observatory, an ancient center of learning in India, was primarily dedicated to the study of astronomy and celestial phenomena.

Bhaskara II, a renowned ancient Indian astronomer and mathematician, made significant contributions to trigonometry, including the development of the concept of the sine function.

Ujjain Observatory, an ancient center of learning in India, was primarily dedicated to the study of astronomy and celestial phenomena.

Brahmagupta, a renowned ancient Indian astronomer and mathematician, made significant contributions to trigonometry, including the development of the concept of the cosine function.

Jantar Mantar, an ancient center of learning in India, was primarily dedicated to the study of astronomy and celestial phenomena.

Varahamihira, a renowned ancient Indian astronomer and mathematician, made significant contributions to trigonometry, including the development of the concept of the tangent function.

Takshashila Observatory, an ancient center of learning in India, was primarily dedicated to the study of astronomy and celestial phenomena.

Aryabhata, a renowned ancient Indian astronomer and mathematician, made significant contributions to trigonometry, including the development of the concept of the secant function.

Nalanda Observatory, an ancient center of learning in India, was primarily dedicated to the study of astronomy and celestial phenomena.

Brahmagupta, a renowned ancient Indian astronomer and mathematician, made significant contributions to trigonometry, including the development of the concept of the cosecant function.