That's not entirely true.
God and deities were indeed aliens from a highly advanced
civilization but not from the 10th planet in our solar
system.
What happened was a long long time ago in a galaxy far far away,
there was a Galactic Empire ruled by an Evil Emperor. Although this
Emperor was very intelligent and manipulative, a rebellion sprung
up that eventually led to his downfall. In the aftermath of the
fall of the Empire, a New Republic sprung up. The New Republic
faced many challenges but eventually, it led to a new golden age of
peace and prosperity throughout the galaxy. Mankind once again
sprung out to explore strange new worlds, to seek out new life and
new civilizations, to boldly go where no man has gone before.
Eventually they came to Earth. However, they had a Prime Directive
that kept them from interfering with our young civilization. A few
bad apples violated the prime directive that led to our stories of
gods.
