Watch how the Space Launch System rocket RS-25 undergoes a core stage engine test-fire. Credit: NASA's Stennis Space Center ...

While this latest test doesn’t make nuclear-powered rocket engines viable just yet, it’s an important step on the journey.

SpaceX has started preparations for the eighth flight test of its mighty Starship rocket, which could take place before the end of this month.

Rosatom scientists have developed a laboratory prototype for a plasma electro-reactive rocket engine based on a magnetic ...

The BE-4 engine is the “most powerful liquefied natural gas fueled rocket engine ever developed,” according to Blue Origin. Watch it gimble at full power in these hotfire test views. Credit: Space.com ...

HELSINKI — A Chinese state-owned company performed a rocket flight ... The Longxing-2 test article is understood to be powered by methane-liquid oxygen engines developed by commercial firm ...

SpaceX's gigantic Starship rocket has been "lost" just minutes into its seventh test flight ... said it had lost contact with Starship as the engines went out. A host on SpaceX's livestream ...

The tests involved two 120-tonne liquid oxygen-kerosene rocket engines and one 18-tonne liquid oxygen-kerosene rocket engine. The institute noted that this marks a major advancement in the country ...

California-based space company Rocket Lab will launch more hypersonic test vehicles for the U.S. Military, as the Department of Defense (DOD) continues to invest in hypersonic technology.

The trials verify that the fuel can survive the harsh environment of a nuclear rocket ... rocket engines. We are excited to continue our collaboration with NASA as we mature and test the fuel ...

SpaceX launched its Starship rocket on its latest test flight Thursday ... The spacecraft’s six engines appeared to shut down one by one during ascent, with contact lost just 8 1/2 minutes ...