The primitives you mentioned saw them as Gods. Christians are the only ones in our modern age that suspects much of the phenomena to be occultic and demonic. I think there may be space faring civilizations that might have been allowed at one time to visit but may have been or will be shortly warned off as God prepares to judge this world. The big fight in the heavenlies may well be a truly universal fight between God aligned planets and Satanic ones as well as between Angels and demons with Christ ultimately and directly intervening.
The universe does not revolve around the earth. Man is not the only sentient Creation of God. Its just a big neighborhood with some populations more advanced than others.