Hyrum Smith teaches the sun, moon, and stars are inhabited.
George Laub, Reminiscences and Journal, ca. January 1845, 34, MS 9628, Church History Library
I will goe & prepar a place for you, & then if there are many worlds then there must be meny gods, for every star that we see is a world and is inhabited the same as this world is peopled. The Sun & Moon is inhabited & the Stars & (Jesus Christ is the light of the Sun) they <the> same as this Earth. But any one of them are larger then this Earth