This makes vacuum nozzles for upper stages of space flight long and heavy, increasing the cost of launch of every rocket humanity has ever used, from the Saturn V to the SpaceX Starship.

SpaceX has offered holiday greetings via a spot of synchronized rocket-engine nozzle steering ... such as in the vacuum of space. SpaceX’s video ends with the Raptor engines firing at full ...

You don’t think of hobby-grade 3D printing as a good method for creating rocket nozzles. But [Mister Highball] managed to create a copper nozzle using a common printer, a kiln, and some special ...