Now the description of that eternal sky... When we speak of sky, because we have material conception of the sky, therefore we think of sky with sun, moon, stars, like that. But the Lord says that the eternal sky, there is no need of sun. Na tad bhāsayate sūryo na śaśāṅko na pāvakaḥ (BG 15.6). Neither in that eternal sky there is need of moon. Na pāvakaḥ means neither there is necessity of electricity or fire for illuminating because the spiritual sky is already illuminated by the brahma-jyotir. Brahmajyoti, yasya prabhā (Bs. 5.40), the rays of the supreme abode. Now in these days when people are trying to reach other planets, it is not very difficult to understand the abode of the Supreme Lord. The abode of the Supreme Lord is in the spiritual sky, and it is named as Goloka. In the Brahmā-saṁhitā it is very nicely described, goloka eva nivasaty akhilātma-bhūtaḥ (Bs. 5.37). The Lord, although resides eternally in His abode, Goloka, still He is akhilātma-bhūtaḥ, He can be approached from here also. And the Lord therefore comes to manifest His real form, sac-cid-ānanda-vigraha (Bs. 5.1), so that we may not have to imagine. There is no question of imagination. The Lord's presence, by His causeless mercy He presents Himself in His Śyāmasundara-rūpa. Unfortunately, people with less intelligence deride at Him. Avajānanti māṁ mūḍhā (BG 9.11). Because the Lord comes as one of us and just like plays with us as a human being, therefore we need not consider that Lord is one of us. It is His omnipotency that He presents Himself with His real form before us and displays His pastimes, just the prototype of His abode. So that abode of Lord, there are innumerable planets also in that brahma-jyotir. Just like we have got innumerable planets floating on the sun rays, similarly, in the brahma-jyotir, which is emanating from the abode of the Supreme Lord, Kṛṣṇaloka, Goloka, ānanda-cinmaya-rasa-pratibhāvitābhis (Bs. 5.37), all those planets are spiritual planets. They are ānanda-cinmaya; they are not material planets. So the Lord says,
- na tad bhāsayate sūryo
- na śaśāṅko na pāvakaḥ
- yad gatvā na nivartante
- tad dhāma paramaṁ mama
- (BG 15.6)
Now anyone who can approach that spiritual sky will not be required to come back again in this material sky. So long we are in the material sky, what to speak of approaching the moon planet.... The moon planet, of course, is the nearest planet, but even we approach the highest planet, which is called Brahmaloka, there also we have the same miseries of material life, I mean to say, the miseries of birth, death, old age, and diseases. No planets in the material universe is free from the four principles of material existence. The Lord therefore says in the Bhagavad-gītā, ābrahma-bhuvanāl lokāḥ punar āvartino 'rjuna (BG 8.16). The living entities are traveling from one planet to another. It is not that we can simply go to other planets by the mechanical arrangement of the sputnik. Anyone who desires to go to other planet, there is process. Yānti deva-vratā devān pitṟn yānti pitṛ-vratāḥ (BG 9.25). If anyone wants to go to any other planet, say, moon planet, we need not try to go by the sputnik. The Bhagavad-gītā instructs us, yānti deva-vratā devān. These moon planets or sun planets or the planets above this Bhūloka, they are called Svargaloka. Svargaloka. Bhūloka, Bhuvarloka, Svargaloka. There are different status of planets. So Devaloka, they are known just like that. The Bhagavad-gītā gives a very simple formula that you can go to the higher planets, Devaloka. Yānti deva-vratā devān. Yānti deva-vratā devān. Deva-vratā, if we practice the process of worshiping the particular demigod, then we can go to that particular planet also. We can go to the sun planet even, we can go to the moon planet, we can go to the heavenly planet, but Bhagavad-gītā does not advise us to go to any one of these planets in the material world because even we go to the Brahmaloka, the highest planet, which is calculated by the modern scientist that we can reach the highest planet by traveling with sputniks for 40,000 years. Now it is not possible to live 40,000 years and reach the highest planet of this material universe. But if one devotes his life in the worshipment of the particular demigod he can approach the particular planet, as it is stated in the Bhagavad-gītā: yānti deva-vratā devān pitṟn yānti pitṛ-vratāḥ (BG 9.25). Similarly, there is Pitṛloka. Similarly, one who likes to approach the supreme planet, supreme planet... The supreme planet means the Kṛṣṇaloka. In the spiritual sky there are innumerable planets, sanātana planets, eternal planets, which are never destroyed, annihilated. But of all those spiritual planets there is one planet, the original planet, which is called Goloka Vṛndāvana. So these informations are there in the Bhagavad-gītā and we are given the opportunity for leaving this material world and get our eternal life in the eternal kingdom. Now in the 15th Chapter of the Bhagavad-gītā, the real picture of this material world is given.