It is a distraction of Satan. How do I know? Because sin came to this planet and isolated her from interaction with the rest of the universe, from the unfallen worlds. Further, if other worlds are also fallen then Christ would have to had visited their planets, die, and rise again as well and the Bible does not teach such. It teaches that we are the only fallen world.

"With His human arm Christ encircled the race, while with His divine arm He grasped the throne of the Infinite, uniting finite man with the infinite God. By transgression the world had been divorced from heaven. Christ bridged the gulf, and connected earth with heaven. In human nature He maintained the purity of His divine character. He lived the law of God, and honored it in a world of transgression, revealing to the worlds unfallen, to the heavenly universe, to Satan, and to all the fallen sons and daughters of Adam that through His grace humanity can keep the law of God! He came to impart His own divine nature, His own image, to the repentant, believing soul." {8MR 40.4}