BERKELEY, Calif.–(BUSINESS WIRE)–Deep Fission, an advanced nuclear energy company redefining the industry by placing small modular pressurized water reactors in boreholes a mile underground, today announced the official name of its proprietary underground reactor: The Gravity Nuclear Reactor (“Gravity”). “Gravity is one of the most reliable forces in nature,” said Liz Muller, Co-Founder and CEO of Deep Fission. “That same reliability is what we’ve built into our reactor design. By placing our