https://techcrunch.com/2020/05/13/rocketlab-tests-new-hypercurie-engine-that-will-power-its-deep-space-delivery-vehicle/

Rocket Lab is already in the testing phase for a new engine it’s building to propel its forthcoming Photon Lunar spacecraft, according to CEO and founder Peter Beck . Beck shared an image of the engine, called hyperCurie, undergoing tests conducted by the company’s propellant team.

HyperCurie, as its name implies, is an evolution of the Curie engine that currently powers the third stage of the Electron rocket that Rocket Lab uses for its missions, as well as the Photon satellite bus. The hyperCurie will power the forthcoming Photon Lunar, which is a new satellite bus being developed by Rocket Lab to carry small payloads to the Moon, Mars, Venus and even beyond.