Jer 10:12 He hath made the earth by his power, he hath established the world by his wisdom, and hath stretched out the heavens by his discretion.
Col 1:16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether [they be] thrones, or dominions, or principalities, or powers: all things were created by him, and for him:
PLUS
Hbr 1:2 Hath in these last days spoken unto us by [his] Son, whom he hath appointed heir of all things, by whom also he made the worlds;
Hbr 11:3 Through faith we understand that the worlds were framed by the word of God,
PLUS
Isa 45:18 For thus saith the LORD that created the heavens; God himself that formed the earth and made it; he hath established it, he created it not in vain, he formed it to be inhabited: I [am] the LORD; and [there is] none else.
Conclusion: yes, there are other worlds, and yes, they are inhabited. The problem is that Satan uses: 2Th 2:9 [Even him], whose coming is after the working of Satan with all power and signs and lying wonders, to lead astray.
After all, the belief in other-world(ly) advanced, "alien" civilizations usually does not lead to Christ, or any kind of saving relationship with Jesus, or any desire to know Him (who made it all in the first place!)
Just as the enemy of truth would have it.
I'll make it as plain and simple as possible - you are a jerk.
Solamente -Chapter 1: Verse 1