We are not alone in the universe!

Carl Sagan — 'The universe is a pretty big place. If it's just us, seems like an awful waste of space.'

Even Islam today accepts Angels taking 50000 years to descend from heaven and says there are many worlds whose inhabitants each believe its the only one in all of creation.

Hinduism believes in Devas and Asuras from Devalok. And then, there are astral planets.

The blue planet project (if I'm remembering this correctly) states that there are 160 types of aliens.

in5d outlines the possible places in the cosmos you may have originated from. Mentioned is Lyra and Pleiades.