We are taking very much pride that: "Now we have discovered the sputnik. It is going to the moon planet." But that is not perfect. It is coming back. But God has produced so many flying planets, millions and trillions of planets, very, very heavy planets. Just like this planet is carrying so many big, big mountains, sea, but still it is flying. It is floating in the air just like a cotton swab. This is God's power. Gām āviśya (BG 15.13). In the Bhagavad-gītā, you'll find: ahaṁ dhārayāmy ojasā. Who is sustaining all these big, big planets? We are explaining gravity. And in the śāstra we find that it is being carried by Saṅkarṣaṇa.