Explosion, yes. So they are seeing that explosion and the chunk, but they cannot explain how the chunk became exploded. Sometimes we see that some earth, by the sunshine heating, heating, heating, it breaks all of a sudden. So this explosion of the chunk does not take place automatically. It is due to the sunshine drying it, drying it, drying it, and at a point it breaks. Similarly, the chunk is also, we can accept, the total material energy. You can take it as chunk. But this material energy in the form of chunk is agitated by the glance of Mahā-Viṣṇu. That is stated, sa aikṣata sa asṛjata. Material energy itself cannot explode. the explosion theory is there... Not theory, fact. But the total material energy, mahat-tattva, when it is glanced over by Mahā-Viṣṇu, then it becomes agitated, and the modes of material nature begins to act. So then these activities are executed by Mahā-Viṣṇu, by His glancing, simply by His glancing. The power... Kṛṣṇa is all-powerful. Viṣṇu is all-powerful. So simply by glancing, He can agitate the material energy, and the creation begins. Sa aikṣata sa asṛjata. Eko nārāyaṇa āsīt. These are the Vedic information. "In the beginning, there was only Nārāyaṇa." Na īśa na brahmā: "There was no Lord Śiva or Lord Brahmā." We have studied that. Nārāyaṇa, the Mahā-Viṣṇu, er, Garbhodakaśāyī Viṣṇu, He created, first of all, Brahmā. He is already there, from Mahā-Viṣṇu to Garbhodakaśāyī Viṣṇu. Then He created Brahmā. Then, through the material energy and Brahmā's cooperation, the whole creation came into existence.
So actually the original person for material creation, Mahā-Viṣṇu, through the agency of māyā, He has created. Māyayā sṛjaty adaḥ. All this cosmic manifestation is created in that way. Those who are not devotee, they cannot see that over the chunk, total material energy, there is the vision of Mahā-Viṣṇu. That they cannot see. Just like you'll find on the ground, so many flowers and grasses are coming up. How? By the sunrise, the glance of the sun. Where there is no sunshine, there the vegetables do not grow. We have got practical experience. Similar... Therefore the field or the earth is not exploding with the vegetation. It is due to the sunshine. Therefore it is coming out. It is the real cause. Similarly, accepting that chunk, the total material energy, it is agitated by the glance of Mahā-Viṣṇu. Then it explodes and things are coming out. We can accept that in that way, but not that automatically there was explosion. That is not fact. Therefore to the foolish person, the power behind the explosion is not visible. Nāhaṁ prakāśaḥ sarvasya yoga-māyā-samāvṛtaḥ (BG 7.25). Therefore Kṛṣṇa says that "I am not visible to everyone, they being covered by the curtain of yoga-māyā."