“For decades, we’ve known of four fundamental forces: gravitation, electromagnetism, and the strong and weak nuclear forces. If confirmed by further experiments, this discovery of a possible fifth force would completely change our understanding of the universe, with consequences for the unification of forces and dark matter.” further experiments are crucial. “The particle is not very heavy, and laboratories have had the energies required to make it since the ’50s and ’60s,” Feng said. The possible discovery of a previously unknown subatomic particle may be evidence of the fifth fundamental force of nature. There are many experimental groups working in small labs around the world that can follow up the initial claims, now that they know where to look.