Lux finds traveling outside Earth's magnetic fields is possible with the gravity drive, but the military from the US and other nations begins to push hard for the tech.
Could they use it to help mine the moon, asteroids, and the moons of other planets? Who controls the areas away from Earth when humans establish bases on different planets?
Lux becomes known around Earth, and the fame may be too much. He finds he is a target for governments and corporations that want to control him and his knowledge. He constantly has to fight off lawyers, greedy politicians, and corrupt corporations, not to mention the aggressive, autocratic nations.