Yes, God created other worlds out there “[God] hath in these last days spoken unto us by his Son… by whom also he made the worlds” (Hebrews 1:2, emphasis mine; Hebrews 11:3).
All these other worlds are un-fallen ( Revelation 5:13). Jesus eluded to that in His parable “What man of you, having an hundred sheep, if he loses one of them, doth not leave the ninety and nine in the wilderness, and go after that which is lost, until he find it?” (Luke 15:4). Jesus left these sinless worlds to come to this one lost world to save the creatures that are made in His image.
The Bible also speaks of a heavenly council meeting in which the “sons of God” gathered before the Lord—and Satan showed up to represent our planet “Now there was a day when the sons of God came to present themselves before the Lord, and Satan also came among them. And the Lord said to Satan, ‘From where do you come?’ So Satan answered the Lord and said, ‘From going to and fro on the earth, and from walking back and forth on it’” (Job 1:6, 7 NKJV). Job 38:6, 7 also seems to indicate that these “sons of God” existed before our world was made.
But while the Bible supports the idea that there is life on other worlds, we should be careful to remember that the devil and his angels can easily create illusions to deceive us by posing as these creations “And no wonder! For Satan himself transforms himself into an angel of light” (2 Corinthians 11:14). Devils can work incredibly convincing miracles (Revelation 13:13, 14).
The un-fallen worlds can not contact us because they are restricted from mingling with us. Our planet is infected with the deadly contagious disease of sin, and we are likely quarantined. The only ones that can help the patients in a quarantined hospital ward are the medical staff; in this case, God’s angels.
That is why UFO sightings are likely dangerous satanic deceptions, countries spying on other countries, or mere optical illusions.
In His service,