It's something I read in my teens, wanna see if it stood the test of time.
So the premise of the book is that there's a space empire ruled by an emperor who gave immortality to humanity, called Greys or something. The emperor's sister gets kidnapped and its up to a space navy captain to rescue her-only it turns out that the emperor ordered it to hide the fact that the "Grey" immortality is limited to a few hundred years. Some space combat, an android commando finding love, and a planetary ai named Alexander later and a civil war is brewing?
by CareBear177