THE NEW SPACE RACE: Revolutionary rocket engine company Venus Aerospace raises $91 million to scale design. “RDREs differ from conventional rocket engines in the way they ignite and expel their propellants. Typical engines burn fuel as part of a controlled process inside a combustion chamber, which is directed through the engine nozzle and bell. RDREs use a ring-shaped combustion chamber and feature a continuously circulating detonation wave, which produces higher pressure and increased thrust while burning less fuel, in theory.”

Last year’s test flight impressed.

Update: Not sure why the X embed didn’t work, other than that just happens sometimes. But now there’s a link.