nowhere in the bible does it say aliens exist, or any other places to live like earth.

in fact, in genesis 1, God says He brought the earth forth on day three, and then the sun, moon and stars were created on day four, all on the same day, to give light upon the earth.

this tells us the cosmology we have been led to believe in modern times is nothing like the heavens and earth God actually created - the two are mutually exclusive, and you cannot believe both.