Prabhupada's lecture - Śrīmad-Bhāgavatam 1.15.38 - Los Angeles, December 16, 1973
You can manufacture a toy sputnik to fly in the sky, to float in the sky, by so many mechanical arrangements. As soon as the machine is gone out, immediately falls down. But just see what machine is there, millions and trillions of airplanes, big, big planet with big, big mountains, oceans, they are floating. So that is His intelligence. Your intelligence may be that you can also float a big airplane. But what is that big airplane in comparison to this big, big planet? It is nothing. There is also petrol stock, and in the airplane there is also petrol stock. Perhaps it is floating by petrol, and you are taking out all the petrols. One day it will fall down. Yes.
You are disturbing God's arrangement. Just like we had the history of Lord Varāha's lifting this planet, earth planet, from the Garbhodaka Ocean. So any time it can fall down. But it is being floated by the supreme power. Otherwise by calculation how such a big planet can float just like a cotton swab? Yes, it is floating. Not only one, millions. So that is explained in the Bhagavad-gītā, gām āviśya ojasā dhārayāmi [Bg. 15.13]. He enters. He enters in each and every planet, in each and every universe, each and every atom. Aṇḍāntara-stha-paramāṇu-cayāntara-stham [Bs. 5.35]. And maintaining them, maintaining them.