Can you give some examples of green technologies applied to space?

The additive manufacturing technologies make it possible to consume only the material needed to build a part, without producing the massive amount of swarf that has to be recycled when using conventional machining. These processes furthermore limit the use of side tooling and can reduce significantly the number of parts to be assembled or welded. Inspection activities concerning these joints can therefore be done away with. Parts can be designed to be lighter and can be made to measure, which has the potential to increase the scientific payload of satellites. ESA currently has several activities for development of space hardware using additive manufacturing (e.g. RF antennas, thruster chambers and injectors, ____).