Question

Some of the Great Ancient Indian Astronomers

Answer 1

Lagadha (1st millennium BCE): He had written the

earliest astronomical text, Vedanga Jyotica,which provides

details on several astronomical attributes, generally applied for

timing social and religious events. It also explains astronomical

calculations and calendar studies, and establishes rules for

empirical observation. Vedanga Jyotica has connections with

Indian astrology and mentions important aspects of the time

and seasons, including lunar months, solar months, and their

adjustment by a lunar leap month of Adhimasa. Ritus and Yugas

are also described. It also mentions of 27 constellations, eclipses,

seven planets and 12 signs of the zodiac known at that time.

Aryabhata (476–550 CE): Aryabhata was the author of the

Aryabhatiya and the Aryabhatasiddhanta. Aryabhata explicitly

mentioned that the earth rotates about its axis, thereby causing

what appears to be an apparent westward motion of the stars.

Aryabhata also mentioned that reflected sunlight is the cause

behind the shining of the moon. Aryabhata’s followers were

particularly strong in South India, where his principles of the

diurnal rotation of the earth, among others, were followed and

a number of secondary works were based on them.

Answer 2

Answer:

Lagadha

Āryabhaṭa

Brahmagupta

Varāhamihira