According to Vedic culture, one has to judge by the result. Not by if you simply talk nonsense, one has to accept. What is the result? Suppose if one says that "I have done very good business. I have earned so much money I have got in the bank balance . . ." You can say all these thing. But one sees that a prosperous businessman has got a nice house, nice motorcar, his standard of living is very nice. But if he is loitering in the street, has no good dress, and if he advertises himself that "I am a very big businessman. I have got so much money," who will believe him? Similarly, this moon planet expedition is, up to this date, it is a failure. So how can I believe that they have gone there?
So this universe is fully described in the Fifth Canto of Śrīmad-Bhāgavatam. You will see it, where, which planet, where it is situated, what is the dimension, what kind of people live there. Everything is there. Similarly, there are description of the hellish planet, downwards. So that description of those planets, when Parīkṣit Mahārāja heard it that "These sinful men, they are suffering there; some of them being fried in boiling oil . . ." This description is there. Some of them put into the river which is full of germs and mosquitoes, and some of them are forced to embrace a iron, hot iron man, a hot iron woman. In this way there are many description.