How Can We Ever Find Antigravity ??? Can we ever find the force of antigravity? This force happened very quickly and sustained briefly during the inflationary phase of the universe. But now it's nowhere to be seen in action. What happens to it? Where did it go? No one knows. Is it because no theory has yet attempted to describe this force? The quantum of gravity is the graviton. Is the quantum of antigravity the antigraviton? Gravitons attract. Do antigravitons repel? The mass of both should be zero as what theory tells us.