Brigham Young also taught that the sun (& by inference the moon too) is/was inhabited:
"I will tell you who the real fanatics are: they are they who adopt false principles and ideas as facts, and try to establish a superstructure upon, a false foundation. They are the fanatics; and however ardent and zealous they may be, they may reason or argue on false premises till doomsday, and the result will be false. If our religion is of this character we want to know it; we would like to find a philosopher who can prove it to us. We are called ignorant; so we are: but what of it? Are not all ignorant? I rather think so. Who can tell us of the inhabitants of this little planet that shines of an evening, called the moon? When we view its face we may see what is termed "the man in the moon," and what some philosophers declare are the shadows of mountains. But these sayings are very vague, and amount to nothing; and when you inquire about the inhabitants of that sphere you find that the most learned are as ignorant in regard to them as the most ignorant of their fellows. So it is with regard to the inhabitants of the sun. Do you think it is inhabited? I rather think it is. Do you think there is any life there? No question of it; it was not made in vain. It was made to give light to those who dwell upon it, and to other planets; and so will this earth when it is celestialized. Every planet in its first rude, organic state receives not the glory of God upon it, but is opaque; but when celestialized, every planet that God brings into existence is a body of light, but not till then. Christ is the light of this planet."
Journal of Discourses Vol. 13, p.271
This info is outta this world!