It’s a book written by Robert Heinlein – if you ignore his central individualist message in the book it’s an entertaining read. And I’d dearly love to see this one get made into a movie.
You see a mathematics professor develops a device to translate through six spatial coordinates. So X,Y,Z,t, tau, teh and another. The t of course is time. So not only space but time – two of my favorites.
But I suspect it’s the very title of the book that puts people off from creating a screenplay from it. They’d rather go with Starship Troopers, another Heinlein book.