Astronomers

Pathani Samanta, whose full name was Chandra Sekhar Simha Samanta (1835–1904), the remarkable self-taught astronomer from Odisha.

What makes him extraordinary is that he performed astronomical observations largely with simple instruments made from bamboo, wood, and local materials, without modern telescopes. 

His major contributions

1. Precise observations of planets and stars

He spent decades observing the motions of the Sun, Moon, planets, and stars and comparing them with traditional Indian astronomical texts. He found discrepancies and worked to improve the calculations. 

2. Study of lunar motion

One of his most impressive achievements was identifying and measuring irregularities in the Moon's motion, including effects corresponding to what modern astronomy calls evection, variation, and annual equation. His measurements were remarkably accurate considering the tools available to him. 

3. Siddhanta Darpana

His life's work was compiled in the Sanskrit treatise Siddhanta Darpana, which contains observations, calculations, and planetary positions derived from decades of study. The work attracted attention from scholars in India and abroad. 

4. Eclipse calculations

His predictions of solar and lunar eclipses were known for their accuracy, achieved through painstaking observation and calculation rather than imported instruments. 

Why he is remembered

Many historians call him one of the last great naked-eye astronomers of India because he continued the ancient Indian tradition of direct sky observation just as modern telescope-based astronomy was becoming dominant. 

It is fascinating to place him in a line with ancient astronomers such as:

Aryabhata

Varahamihira

Brahmagupta

and, in a completely different era, the astrophysicist Subrahmanyan Chandrasekhar, who studied stars, white dwarfs, neutron stars, and black holes and discovered the famous Chandrasekhar Limit.

An interesting contrast is that Pathani Samanta looked up at the sky with his own eyes and handmade instruments, while Subrahmanyan Chandrasekhar used advanced mathematics to understand the life and death of stars. Both, in their own ways, expanded humanity's understanding of the heavens.