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 ...

Chinese startup Mega Engine advances reusable staged-combustion rocket engine A new Chinese commercial rocket engine startup ...

The Earth is much larger than most people realize. You need to use engines if you want to efficiently navigate large sections of the planet. Everything from cars to planes relies on engines, but they ...

Scientists learned early on how crucial the roll maneuver was to get astronauts to space, and NASA has been using it since the days of its earliest rockets.