Celestial Church of Christ was created in 1947.

I recommend looking at the Church's website, especially the page on the Related Link below.

Yes. According to the doctrine of The Church of Jesus Christ of Latter-day Saints (the "Mormon" church), there are three levels or kingdoms of heaven, the Celestial, Terrestrial, and Telestial. The Celestial Kingdom is the highest, and is the eternal home of God the Father and Jesus Christ. Jesus Christ has the ability to visit those in the Terrestrial kingdom, but his home is the Celestial Kingdom at the right hand of His Father, God.

They are in communion because Christ is the head of his church while the church his body. The spouse of Christ is the church.

The church of Christ