Other Guides we've created that you might be interested in.
Aliens!
Aliens serve a lot of different purposes in science fiction. They can act as stand-in for human society allowing us to examine aspects of our culture. Or they can represent an exercise of the imagination--an attempt to view the universe in a way different than our own.
Humans and Aliens living together--sometimes happily, sometimes not.
Lovable, funny or horrifying, aliens make their presence felt in these stories!