Each and every planet is differently constructed. They do not know. These rascals, they are passing as scientists and simply giving this conclusion, that “Every planet is full of dust and rocks.” If dust and rocks, then why from the sunshine so much heat is coming, and why from the moonshine so soothing and pleasing shine is coming? These rascals, they do not know. And they are passing as scientists. I call them directly rascals, simply, set of rascals. They have never gone to the moon planet. They do not know what are the different position of the different planets. Simply they are, I mean to say, cheating people to get good salary. That’s all. And in the name of scientist.

From Srila Prabhupada’s lecture on SB 5.5.10-13, Vrindavana, November 1, 1976