Suppose in the distant future, converting mass into energy is something as that common and easy as heating food with microwaves are today. Now, suppose we built one of these energy to mass converters in space and another mass to energy converter here on earth. Additionally, we connect the two "converters" with a superconducting wire where none of the energy would be loss. Afterwards, we beam energy from the earth up to the Energy to Mass converter in space where it would create a matter/antimatter pair. Then we dropped the newly created object onto a kinetic to electrical machine on the surface of the earth. Next, we would annihilate the object to create energy, converted it to electrical energy, and beamed all the energy back up again and repeated this process again and again. After doing this process once, we would find that we would gain more energy than we started with due to gravitational potential energy. Ex. Input = Matter / Antimatter pair Output = Matter / Antimatter pair + GPE So, wouldn't this violate the conservation of energy?