He had already concluded that the Earth was a sphere, that the Moon orbited the Earth and the Earth orbited the Sun.
’ सत्यालका अनुसार यो ग्रहको चन्द्रमा (उपग्रह) रहेछ भने त्यसको आकार पृथ्वी जत्रो हुन सक्ने बताए ।