Brigham Young teaches that the faithful who will be exalted will have earths and worlds; our earth has been made by the Father of our Spirits who is also the one who created our mortal bodies.
Brigham Young, "Nothing Strange or New to Live and Die—Must Die in Order to Be Quickened—the World of Mankind Ignorant of Immortality—the Righteous Should Live to Enjoy the Light of the Spirit—All People Are the Children of God—They Learn By Contrast—Worlds to Be Organized and Peopled in Future Existence," Journal of Discourses, 26 vols. (Liverpool: Albert Carrington, 1875), 17:143
All those who are counted worthy to be exalted and to become Gods, even the sons of God, will go forth and have earths and worlds like those who framed this and millions on millions of others. This is our home, built expressly for us by the Father of our spirits, who is the Father, maker, framer and producer of these mortal bodies that we now inherit, and which go back to mother earth. When the spirit leaves them they are lifeless; and when the mother feels life come to her infant it is the spirit entering the body preparatory to the immortal existence.