Exaltation/fall are *traditional* things, although lots of modern do use them as well. Re: saturn YES basically. go to wikkipedia to read all about these things...
Sorry, I didn't understand, did U mean in modern astrology exaltation and fall sign of neptune and pluto is still undiscovered?? Because the book I am reading exalt/fall info of pluto/neptune is not available. The author put empty space infront of uranus/neptune and he mentioned exalted/fall sign in front of other 8 planets.
and exact degree of exaltation is known till saturn only?