A German company has completed a six-week test of its full-flow staged combustion rocket engine. Named Typhoon, the engine’s ...

If we are sending manned interstellar missions to other star systems, it becomes very hard to keep masses and power levels ...

Russian forces have installed multiple rocket launchers at Ukraine’s shut-down Zaporizhzhia nuclear power plant, Ukrainian officials claimed Thursday, raising fears Europe’s largest atomic ...

Ad Astra Rocket Company (Ad Astra) and The Space Nuclear Power Corporation (SpaceNukes) have signed a strategic partnership to advance high-power Nuclear Electric Propulsion (NEP) technology to ...

Ukraine’s state nuclear power firm has warned that containers with radioactive material might be shelled and said it is vital Kyiv retake the plant by winter. It accuses Russia of wanting to connect ...

For now, Sunbird is in the very early stages of construction and it has exceptional engineering challenges to overcome, but Pulsar says it hopes to achieve fusion in orbit for the first time in 2027.

KYIV — A U.N. nuclear watchdog team set off on an urgent mission Monday to safeguard the Russian-occupied Zaporizhzhia atomic power plant at the heart of fighting in Ukraine, a long-awaited trip ...