Are we about to discover a fifth force of nature?


Staff Member
4 Jun 2021
5,123 (4.49/day)
We're all used to the four fundamental forces, gravity*, electromagnetic, strong and weak nuclear forces, but could there be a fifth force waiting to be discovered? Recent particle accelerator results suggest that there might be and its effect on physics would be profound.

Modern physics deals with some truly mind-boggling extremes of scale. Cosmology reveals the Earth as a tiny dot amid an observable universe that is a staggering 93bn light years across. Meanwhile, today’s particle colliders are exploring a microcosmic world billions of times smaller than the smallest atom.

These two extremes, the biggest and smallest distances probed by science, are separated by 47 orders of magnitude. That’s one with 47 zeros after it, a number so ludicrously huge that it isn’t worth trying to get your head around. And yet, despite exploring such radically different distances and phenomena, cosmology and particle physics are deeply connected. Observing the motions of stars and galaxies can reveal the influence of as-yet-undiscovered particles, while studying fundamental particles in the lab can tell us about the birth and evolution of the cosmos.

Intriguingly, both disciplines are grappling with unexplained results that could be pointing to the existence of a new force of nature. If such a new force were to be confirmed, the implications for our understanding of the universe, its history and makeup would be profound.

*Not strictly a force, but the curvature of spacetime.


Web Diva
Staff Member
13 Apr 2022
2,253 (2.72/day)
I like science and the scientists that continue to try to solve the mystery of the universe and the complexity of physics. If they prove there's a fifth force, omg!
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