This arrangement leads to a few complicated welding and machining processes, but surprisingly these obstacles can be overcome by simply printing a rocket engine on a 3D printer. The current engine ...

Ex-Google CEO Eric Schmidt is taking over as CEO of rocket startup Relativity Space, which has ambitions to reach Mars.

Relativity Space announced it has begun production on the Terran R rocket aiming for a late 2026 launch from Cape Canaveral while also switching up CEOs.

Hybrid rocket engines offer perks from both worlds, with simple solid fuel and the ability to throttle down by regulating oxidizer flow. Naturally, [Integza] decided he should try and 3D print one.