Spears of the Sun
It’s not that Jules looks for trouble. As an astrobiologist, he’d rather study an intriguing alien species of a plant/animal called blackroot, found on planet Halcyon. But his telepathic abilities attract the wrong aliens, and Terrans.
This time, it’s General Ki Rowdinth, the crazed leader of the Vermakt people of planet Fartherland. This psychotic tyrant intends to extort the combined gold depositories of Earth and all the colony planets to finance an army that will rule the worlds. If planet Alpha, the seat of the Worlds Government, doesn’t agree to Rowdinth’s demands, he vows to engage a dark-energy weapon that will destroy Earth.
It looks as though only Jules, with his powerful telepathic abilities, stands between the rat-like general and the total annihilation of our homeworld, planet Earth.