Our power is nothing that mankind is familiar with. Obviously, if we are aware of some 387 electron particles, besides the one that you are aware of, we are aware of many more subatomic particles than you are, chemical reactions, and what you would call nuclear reactions. We are able to secure the material we need wherever we go. The power that we use is under your feet, but you do not know how to utilize this. Therefore it is a type of nuclear reaction, not one that causes destruction or that escapes from us, and we can renew our power source as we go puttering about in the Universe.