Everything in the material world, they're made of five elements: ether, air, and fire, water, and earth. So in somewhere the earth is predominant, somewhere the air is predominant, somewhere the fire is predominant. So there are innumerable planets, and the sun is one of them. So this is also material object. If it is possible for the material object to disappear and appear within our limited senses, what to speak of God and His devotees. So God does not mean that because He is not visible to our imperfect senses, therefore God has no existence. This is foolishness. God is existent. But one who has got eyes to see...
What is that eye? Just like a small child. If I say to the small child, so "Sun is there in the sky, and the child will say, "Show me where is the sun." And if somebody says, "Yes, come on, I shall show you sun. Come on the roof. I have got a torch-light." As it is not possible to show the sun at night, although the child is insisting, similarly, the so-called scientists who are claiming that there is no God, they're just like the child.