Bhū-Maṇḍala is “the place where we exist” [lit. bhū], seen as the center of a circular collection of circular things [lit. maṇḍala]. However, the Sun is the true center of this maṇḍala, because the maṇḍala’s circular border [maṇḍala-āyāma-viśeṣa] is defined by the extent of the Sun’s effective gravity [yavāt ādityaḥ tapati]. Thus, Bhū-Maṇḍala really refers to a simple, obersvationally-oriented version of what modern people call the “solar system:” A disc-like collection of planetary orbits [jyotiṣāṁ gaṇaiḥ candramā vā], seen from the vantage point of our place of existence [bhū].
In scientific lingo, Bhū-maṇḍala is, “the central habitable point of the heliocentric solar system.”
– Viz Śrīmad Bhāgavatam 5.16.1
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