Unconventional Rocket Drives - Nuclear Thermal Propulsion

NASA and DARPA will build a nuclear rocket by 2027

Innovative concept for an ultra-small nuclear thermal rocket utilizing a new moderated reactor - ScienceDirect

Universities study liquid-fueled nuclear thermal propulsion concept for NASA -- ANS / Nuclear Newswire

A new era of spaceflight? Promising advances in rocket propulsion - Reaction

There's one place where the case for nuclear power is undisputable

Unconventional Rocket Drives - Nuclear Pulse Propulsion

ToughSF: NTER: Nuclear Thermal-Electric Rocket

Emerging In-Space Propulsion Technologies, The Aerospace Corporation

Plutonem: Adding Efficiency to Space Travel Through Fusion Rockets, by Daksh Verma

A New Era of Spaceflight? Exciting Advances in Rocket Propulsion

Timber Wind: America's Return to Nuclear Thermal Rockets – Beyond NERVA

Powering Maneuvers in Space Air & Space Forces Magazine

Laser Propulsion Could Satisfy Our Spacecraft's Need For Speed