DRACO nuclear thermal rocket concept art: an NTP vehicle firing its engine beyond Earth, the Moon ahead (DARPA concept art)

The Team

Built by the people who restarted NTP.

Nuclear thermal propulsion returned to the national agenda because specific people pushed it there. Several of them founded this company.

Concept art: DARPA, DRACO program.


Four Dark Fission team members under the Dark Fission Space Systems sign outside the Liberty Street office in Leesburg, Virginia
Outside the Liberty Street office, Leesburg, 2025.

Fred Kennedy, PhD

Chief Executive Officer & Co-Founder

Fred spent 23 years as a U.S. Air Force officer, retiring as a Colonel. In his first stint at DARPA, he was a program manager in the Tactical Technology Office, where he ran the Orbital Express autonomous satellite servicing mission; he then served as senior advisor for space and aviation at the White House Office of Science and Technology Policy before returning to DARPA as Director of the Tactical Technology Office, where he initiated the DRACO nuclear thermal rocket program. He subsequently stood up the Space Development Agency as its inaugural Director and held senior executive roles at Astra and Momentus. Fred holds BS and MS degrees in aeronautics and astronautics from MIT and a PhD from the University of Surrey. He writes on space technology and policy as a Forbes contributor.

Michael Jacox

Co-Founder

Michael's career spans the full arc of American space nuclear power and a broad swath of the space industry beyond it: space nuclear systems work at the Idaho National Engineering Laboratory, founding Starvision, and more than a decade as Vice President of Engineering at Space Micro. He co-founded Dark Fission in 2022.

Gregory Loboda

Co-Founder

Greg's engineering career runs through JPL and McDonnell Douglas, where he worked on the DC-X reusable launch vehicle demonstrator, and continued at Vector and Momentus, where he and Fred worked together before co-founding Dark Fission in 2022.

Strategic Advisors

Stan Dubyn

Founder of Spectrum Astro and Millennium Space Systems: two of the most successful spacecraft manufacturers ever built from scratch, and a masterclass in turning small, fast engineering teams into national security space primes.

Paul "Rusty" Thomas

Senior engineering and program leadership at SpaceX, Amazon's Project Kuiper, Sierra Space, and EnduroSat; previously the DARPA program manager for Blackjack, the program that helped prove out proliferated LEO architectures.