Jeff Thornburg helped turn a government research project into SpaceX’s most powerful rocket engine. Now, he’s trying to do the same thing at his startup Portal Space Systems, which is taking an idea ...

UK space propulsion company Pulsar Fusion has conducted the first test of a prototype exhaust system for a nuclear fusion rocket engine that could dramatically cut transit times for missions to Mars ...

WASHINGTON — Astrobotic, a developer of lunar landers and suborbital rockets, has successfully tested an advanced rocket engine that could power those vehicles. The Pittsburgh-based company announced ...

SpaceX’s Raptor engine and Blue Origin’s BE-4 engine are two key innovations in rocket propulsion, each with its unique design and performance characteristics. While the Raptor engine leverages ...

A new generation of space rockets is inching closer to launch. Private space company Astrobotic recently revealed it carried out a successful test of two of its rotating detonation rocket engines ...