The term 'SOME ALIENS' can be broken down into two crossword solutions: EMIGRES (7 letters) and ETS (3 letters). EMIGRES refers to people who have left their native country in order to settle in another, while ETS is an acronym for Extra-Terrestrial Species. Both terms refer to individuals or groups of people who are not native to a particular place. EMIGRES are typically human beings who have chosen to leave their homeland for various reasons, while ETS refers to non-human species from other planets.