SpaceX didn’t just build a new rocket engine — they built one of the most complex systems ever attempted. The Raptor engine runs at extreme pressures, pushing fuel and oxygen through a tightly ...

Engineering physical systems still depends on human talent, according to Impulse Space president Eric Romo.

Polaris will build a two-stage, horizontal take-off and fully reusable hypersonic research vehicle, featuring a linear aerospike rocket engine. German company Polaris Spaceplanes announced on Jan. 27, ...