The Orbit of the Sun, the Measure of Day and Night, and the Sun-God’s Chariot
एतेन हि दिवो मण्डलमानं तद्विद उपदिशन्ति यथा द्विदलयोर्निष्पावादीनां ते अन्तरेणान्तरिक्षं तदुभयसन्धितम् ॥ २ ॥
etena hi divo maṇḍala-mānaṁ tad-vida upadiśanti yathā dvi-dalayor niṣpāvādīnāṁ te antareṇāntarikṣaṁ tad-ubhaya-sandhitam.
As a grain of wheat is divided into two parts and one can estimate the size of the upper part by knowing that of the lower, so, expert geographers instruct, one can understand the measurements of the upper part of the universe by knowing those of the lower part. The sky between the earthly sphere and heavenly sphere is called antarikṣa, or outer space. It adjoins the top of the sphere of earth and the bottom of that of heaven.
This verse explains antarikṣa as the intervening region between two domains, compared to the space between the two halves of a split seed—connected to both sides.
He uses a simple, visual analogy to help the listener grasp how learned teachers describe the measure and divisions of the celestial sphere and the ‘in-between’ region.
It encourages careful learning through clear analogies—approaching complex spiritual or philosophical topics with humility, structure, and intelligible examples.