When you buy through links on our articles, Future and its syndication partners may earn a commission. E.T., Stitch, Chewbacca, Groot — humans have a lot of ideas about what aliens might look like.

But the real truth is that alien life on other planets could be even stranger than floating balloons or amorphous organisms ...

E.T., Stitch, Chewbacca, Groot — humans have a lot of ideas about what aliens might look like. But what is the science behind extraterrestrial life? Is it possible that humans will ever experience ...