In 2001, the Congregation for the Doctrine of Faith decided that Mormon baptisms are not valid as far as Catholicism is concerned, because of certain doctrines of Mormonism that are problematic from a Catholic viewpoint. This articleby Fr Luis Ladaria, S.J. summarizes these problematic doctrines, and here is one of them:
God the Father is an exalted man, native of another planet, who has acquired his divine status through a death similar to that of human beings, the necessary way to divinization (cf. TPJS, pp. 345-346).
My question is, what planet do Mormons think God the Father is a native of? I didn't know that Mormons believe that there are or were humans on multiple planets.
By the way, TPJS refers to the LDS document "Scriptural Teachings of the Prophet Joseph Smith", and here is what I found on pages 345-346:
God himself was once as we are now, and is an exalted man, and sits enthroned in yonder heavens! That is the great secret. If the veil were rent today, and the great God who holds this world in its orbit, and who upholds all worlds and all things by his power, was to make himself visible, — I say, if you were to see him today, you would see him like a man in form — like yourselves in all the person, image, and very form as a man; for Adam was created in the very fashion, image and likeness of God, and received instruction from, and walked, talked and conversed with him, as one man talks and communes with another. In order to understand the subject of the dead, for consolation of those who mourn for the loss of their friends, it is necessary we should understand the character and being of God and how he came to be so; for I am going to tell you how God came to be God. We have imagined and supposed that God was God from all eternity. I will refute that idea, and take away the veil, so that you may see. These are incomprehensible ideas to some, but they are simple. It is the first principle of the Gospel to know for a certainty the Character of God, and to know that we may converse with him as one man converses with another, and that he was once a man like us; yea, that God himself, the Father of us all, dwelt on an earth, the same as Jesus Christ himself did; and I will show it from the Bible.
I think the fact that Joseph Smith says "an earth" rather than "the earth" is why Ladaria says "another planet".
In any case, do the Book of Mormon or any LDS documents shed light on the identity of this planet? Do Mormons believe that humans still live on that planet?