With an avalanche of private space companies upon us, the number of engines meant to carry rockets and their cargo into space has grown rapidly over the past few years. This world is now dominated by ...

SpaceX currently controls nearly every rocket launch on Earth. With 98% of global orbital launches under its belt, Elon Musk's company has become the de facto gatekeeper to space. While China is still ...

Researchers demonstrated the first fully 3D-printed, droplet-emitting electrospray engine. The low-cost device can be fabricated more quickly than traditional thrusters, potentially from on board a ...