GFM Drive Discovered
Technological achievement
GFM technology revolutionized space flight and the energy grid. Using gravity induction it's possible to harvest the latent gravitational energy in flux around celestial bodies. Travel between the inner solar system also became a non-issue and ship designs became much larger and more complex.
GFM technology invalidates the delta V function in orbital dynamics, allowing users to manipulate gravity and momentum and turn it into motion. Like moving space around you. Tension rose between the two superpowers.