Ursa Major Technologies has completed the first hot-fire tests of its Hadley H13 liquid rocket engine, a milestone the company says could support reusable hypersonic test vehicles and smaller launch ...

A startup high-speed flight company from Houston, Texas, has successfully tested its Rotating Detonation Rocket Engine (RDRE) ultimately aimed at allowing travel at four to six times the speed of ...

A US-based propulsion company has successfully launched and flown a new rocket powered by a unique rotating detonation engine. Although relatively small by rocket standards, the test could pave the ...

Sassie Duggleby, co-founder and chief executive of Venus Aerospace (right) speaks at Axios "Future of Defense" conference. Credit: Axios WASHINGTON — Rocket propulsion startup Venus Aerospace ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...