In the scriptures, the word "heaven" is used in two basic ways. First, it refers to the place where God lives, which is the ultimate home of the faithful (see Mosiah 2:41). Second, it refers to the expanse around the earth (see Genesis 1:1).
"Entrance into the Kingdom of God"
Bernard P. Brockbank, Ensign, Jan. 1973, 44–46
Heaven, which is the kingdom of God, is where those who have been obedient to God's plan of life and salvation go after judgment and the resurrection.