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Showing posts from July 14, 2018

Gola in Hinduism – The Concept of Sphere in Hindu Astronomy

Gola, or sphere, has played an important role in the development of Hindu astronomy down the ages. In Hinduism, spherical trigonometry has been employed for the explanation and elaboration of astronomical phenomena, computation of planetary longitudes and for solving problems. Three basic spheres are conceived by Hindu astronomers – bhugola (earth sphere), vayugola (atmosphere sphere) and akshagola or bhagola (zodiacal sphere). Bhugola in Hindu astronomy is conceived as a globe that remains suspended in the center of the universe. Vayugola is taken as one having in its periphery the three great circles, the ghatikavitta (celestial equator), the dashinottaravritta (celestial meridian) and the lanka kshitija (the east-west great circle passing through lank and touching the two poles. Bhagola or akshagola is conceived as being encircled by the zodiac, the apakrama mandala (ecliptic circle), the ghatika-mandala (celestial equator), the motion of the sun and the