How do you control a nuclear space propulsion system? Very carefully. To help with this, the Oak Ridge National Laboratory (ORNL) has built a simulated nuclear reactor test bed to develop the engines ...

Japan’s H3 rocket suffered engine trouble on December 22, 2025, and failed to place a Japanese navigation satellite into ...

A Texas-based startup just made aviation history. The company completed the first U.S. flight test of a next-generation rocket engine that could be transformational for both hypersonic weaponry and ...

Orbital Operations plans to use its seed funding to grow its small team (above) and work on cryogenic propellant management technologies and a rocket engine. Credit: Orbital Operations WASHINGTON — ...