/https%3A//blueprint-api-production.s3.amazonaws.com/uploads/card/image/849757/403138f3-f642-4458-8b8b-cdc97a39bee2.png)
This post is part of Science of Sci-Fi, Mashable's ongoing series dissecting the science (or lack of science) in our favorite sci-fi movies, TV shows, and books.
It's one of the oldest tropes in science fiction: when aliens invade Earth, we fight back....
