And Lost in All the Kerfuffle on Gravitational Waves–

A diagram of the Japanese machine that might have found the tetraneutron.

Image credit: Keiichi Kisamori.

We have news that physics might have found a four neutron atomic nucleus. This is surprising because accepted wisdom in the Standard Model says that small nuclear groupings of neutrons shouldn’t form at all. Regardless, without protons to stablize them, these pure neutron nuclei decay very quickly. Physicists are now searching for other ways to test and confirm this early result.

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