When they're high up, oh, they'll take photograph, "Oh, this planet is so . . . this earthly planet is so green or so small. I am going round day and night and seeing in one hour three times day and night." All right, very good. Please come down again. (laughs) That's all. Māyā is so strong, she will say: "Yes, very good. You are very advanced in your scientific knowledge, but please come down. Come here. Otherwise you are going to be put into the Atlantic Ocean." That's all.
And they'll still be puffed up, "Oh, we are making progress. Within next ten years, you can purchase ticket or land in the moon." You know, in Russia they sold land, and they advertised that, "There is Sea of Moscow. We have planted our flag on the sea in the . . ." So these are propaganda. They cannot go even into the nearest planet, what to speak of the spiritual sky. If you actually serious of going to the spiritual sky and Vaikuṇṭhaloka, then take this simple method, Hare Kṛṣṇa. That's all.