The English word alien’s claim to fame mostly dates back  to a Sci-fi movie of the eighties, with an lizard like extraterrestrial coming to life in some kind of splatter Cesarean section which still today instills quite shock, even on the battlehardened horror fiend.

For English as a second language learners it is interesting to know that alien in its actual meaning means more something like forein, respectively foreigner.

Sting: I’m an alien I’m a legal alien
I’m an Englishman in New York