For the first time, researchers at the Institute of Nuclear Physics, Johannes Gutenberg University Mainz, in collaboration with scientists from China and Japan, have successfully produced the extremely neutron-rich hydrogen isotope ⁶H using an electron scattering experiment. Conducted at the Mainz Microtron (MAMI) particle accelerator, the experiment introduced a novel method to study light, neutron-rich nuclei. The findings challenge existing models of multi-nucleon interactions and reveal strong neutron interactions within the nucleus. The experiment involved impinging an electron beam on a lithium target to create ⁶H through a two-step process. Despite the scarcity of experimental data on such exotic nuclei, the team achieved a breakthrough by observing a very low ground-state energy for ⁶H, indicating unexpectedly strong neutron interactions. The precision of the experiment, enabled by MAMI's beam quality and the unique setup, provided insights that may revolutionize the understanding of multinucleon interactions in neutron-rich systems.