This is space. It's sometimes called the final frontier. (Except that of course you can't have a final frontier, because there'd be nothing for it to be a frontier to, but as frontiers go, it's pretty penultimate . . .)
Terry PratchettCarpe Jugulum," read Agnes aloud. "That's... well, Carpe Diem is 'Sieze the Day,' so this means-" "Go for the throat
Terry Pratchett