There are four ways suggested. If you want to go to the higher planetary system, not by force you can go to the moon planet. That is not possible. That is simply childish. You cannot go. You must have to be qualified how to go there. Just like if somebody comes to your country, Australia, he has to take the visa, permit, passport, so many things. Then you allow. So how you can be allowed to enter into the moon planet, which is the residential place of demigods? That is a very controversial point. They say that they have gone to moon planet and there is no life. This is simply nonsense. Every planet is full of living entities. But if they say they could not find any living entities, then it is to be understood they haven't gone to the moon planet. There are many other points also; we do not wish to discuss. But moon planet is the higher planetary system, sun planet is the higher planetary system, and there are many others. If you like to go there, you can go. Yānti deva-vratā devān. You have to make . . ., prepare yourself for going there. Similarly, there are Pitṛlokas. You can see so many, many thousands and millions of planets. Every planet is residential quarter. Just like this planet is residential quarter, every planet is resident. Innumerable lives there are according to the position.
So here it is said that aśraddadhānāḥ puruṣāḥ (BG 9.3). Kṛṣṇa is giving you a system as you can go to Him, back to home, back to Godhead. That is Kṛṣṇa consciousness movement. Why one should go to God? No, that is stated in the Bhagavad-gītā: yad gatvā na nivartante tad dhāma paramaṁ mama (BG 15.6). You can go to any other planets. You can have very long duration of life. The standard of living is very, very high. Just like here in this planet sometimes we see the standard of living condition in Europe, America, is better than other places. They become very much clever, that in Europe and America, and Australia also, another addition of European. So big, big roads, big, big skyscraper house, all very comfortable. So as you see differences of standard of living here, similarly, each and every planet there is different standard of living. And it is said in the śāstra that if you go to the moon planet, then you live there for ten thousands of years. Ten thousand of years. And their calculation of time is also greater than ours. It is calculated that our six months is equal to their one day. That is called deva calculation. In this way you can get very long duration of life, very comforts, and nice, beautiful body and residential quarters. Everything is very, very nice. Each higher planetary system is better than the other, better than the other. This way you can go to the Brahmaloka. Brahmaloka mean where the topmost planet. They have calculated, the modern astronomers and the planet-goers, that it takes about forty thousands of years to go to the topmost planet of this universe. So these things are there.
Anyway, in the Bhagavad-gītā it is said that even if you go to the topmost planet, there is also birth, death, old age and disease. You cannot avoid this. So long you shall remain within this material world, you have to accept these four principles of material condition, that you'll have to die. Either you live for ten thousands of years or ten millions of years, it doesn't matter; you have to die. Even Brahmā dies, who has got many millions of years. It is stated in the Bhagavad-gītā, Brahmā's one day, daytime duration, which is calculated, our twelve hours. There are twelve hours day, twelve hours night. That is twenty-four hours. So Brahmā's one daytime duration, twelve hours ours, is calculated to be forty three hundred thousands of years multiplied by one thousand. Now calculate what is the . . . That is forty three hundred thousands of years.
Puṣṭa Kṛṣṇa: 4,000,300,000.
Prabhupāda: Four billion, three hundred years or something like. That is our . . . As our twelve hours, Brahmā's twelve hours is that. Then add twelve hours again, four hundred billion years. That means altogether eight billions of years. That is one day, Brahmā's. Then calculate one month. Then calculate one year. Such hundred years he lives. So that is stated in the Bhagavad-gītā. Sahasra-yuga-paryantam ahar yad brahmaṇo viduḥ (BG 8.17). Sahasra-yuga-paryantam. One yuga means forty-three lakhs of . . ., hundred thousands of years. Sahasra means thousand times. That is . . . Everything is stated there. You can learn. You can understand. So that is called Brahmaloka. And it is also stated, ābrahma-bhuvanāl lokāḥ punar āvartino 'rjuna (BG 8.16). Even if you reach to the Brahmaloka, you can get long duration of life; there is no doubt. But again, punar āvartinaḥ, you have to die and you have to go to another body and another planet. But I am eternal. We are eternal. Na hanyate hanyamāne śarīre (BG 2.20). By destruction of this body, maybe after two hours or four minutes . . . There are many, many living entities, they live for some minutes, some second, some years. The human in this material world, in this planetary system, we live, say, utmost, hundred years. But in other planetary system they live for millions of years. It is a ques . . . This world is relative. According to your position the relative condition is there. My past and present and future is not the same past, present, future of an ant. The ant's past, future, may be three hours or four hours. Our past, present, means hundred hours, and Brahmā's past, present, millions of years. Everything is relative, according to the position.
So real aim of life is to stop the cycle of birth and death. That is real aim of life. If we do not know this, then we are ignorant. We are ignorant. First of all we must know that "I am eternal." That is . . . In the beginning of the Bhagavad-gītā it is very nicely explained that antavanta ime dehā nityasyoktāḥ śarīriṇaḥ (BG 2.18): "My dear Arjuna, this body is destructible, but the proprietor of the body, he is eternal." That is the first instruction. I am not this body; I am the proprietor of this body. You are not this body; you are the proprietor of this body. But if we think that "I am body," then that is the same thinking as the dog is thinking. Therefore I have given in the statement that if we think this lump of matter as "myself," then we are no better than the dog. The dog is also thinking like that. That human form of life is meant for understanding that "I am not this lump of matter; I am . . ." Ahaṁ brahmāsmi: "I am spirit soul." That is required. The whole Bhagavad-gītā teaching is based on this principle, first of all to understand that "I am not this body; I am spirit soul, Brahman." Ahaṁ brahmāsmi.