Energy & Green Tech

ESA plans to investigate wireless power from space

Solar power gathered far away in space, is seen here being transmitted wirelessly down to Earth to wherever it is needed. ESA plans to investigate key technologies needed to make Space-Based Solar Power a working reality ...

Engineering

Microwave-powered rocket propulsion investigated

Sending a rocket into space typically requires about 90% of the rocket's initial weight to be fuel. This limitation could be overcome by wirelessly transmitting the needed power to the rocket through a beam of microwave radiation. ...