Watch Natural History of an Alien (1998) : Full Movie Online Free Natural History of an Alien, also known as Anatomy of an Alien in the US, is an early Discovery Channel pseudo-documentary. This pseudo-documentary featured various alien ecosystem projects. It also featured many notable scientists and science fiction authors. In it, the audience is aboard an interstellar spacecraft called the SS Attenborough, piloted by a tiny green alien. This ship travels to a variety of destinations, both real and fictional.