Phonon energy plays an important role in superconductivity. When a metal reaches its critical temperature, it produces minimum phonon energy which generates maximum phonon energy on the outer surface. This maximum surface phonon energy consists mostly of anti-graviton energy packages, which causes a repulsive force that overcomes gravity and makes the metal hover above the earth's surface at a certain distance. The amount of anti-graviton energy on the surface changes according to the angle formed between the object and the earth.