Asteroid mining

Deep space industry is using The Comet-1™ electrothermal thruster uses the most abundant resource in the solar system—water—as propellant. It is intrinsically inert, launch safe, and cost-effective. This low-power, low-profile, high total impulse micropropulsion system is CubeSat-compatible but incorporates a highly-flexible interface suitable for a wide range of spacecraft sizes. they are using this to try to start mining materials from asteroid belts.