Alien Invasion

Alien Invasion deals with scenarios in which extra-terrestrial life tries to conquer or destroy the human race, usually via a direct (or hidden) assault upon the planet Earth - the idea of Alien Invasion is rife in sci-fi, horror and doomsday fiction : some conspiracy theorists fear we are in the process of a real Alien Invasion while some religious societies dismiss the idea of Alien Invasion in favor of Demonic Invasion, some blend the two together to form the controversial theory of Demonic Aliens : often linked to the idea of Divine Delusion.

Alien Invasion has also been deemed as one of humanity's greatest threats of survival by some fringe scientists, though most mainstream scientists still put the idea squarely in the realms of science-fiction.