What is the source of kinetic energy? Take two calculation that result in a lot of energy. First, if the Milky Way is moving toward the Virgo cluster at 600km/ sec, it has a kinetic energy of 4 e59 ergs. Second, take an electron "rotating" around a nucleus with a ionization energy of 15eV and then multiply by the number of electrons ,e79, for e68 ergs. There are many objects moving and spinning all with significant energy. Here does it come from?