The A1 Collaboration at the Institute of Nuclear Physics at Johannes Gutenberg University Mainz (JGU) achieved a significant milestone by producing the extremely neutron-rich hydrogen isotope 6H for the first time in an electron scattering experiment. This groundbreaking achievement challenges the current understanding of multi-nucleon interactions in light, neutron-rich nuclei. The experiment, conducted at the Mainz Microtron (MAMI) particle accelerator, involved a collaboration between researchers from Germany, China, and Japan. By using a unique method involving an 855 MeV electron beam on a 7Li target, the scientists were able to observe the creation of 6H through a complex two-step process, shedding light on the neutron-to-proton ratios in extremely neutron-rich systems. The experiment's success was attributed to the high-resolution spectrometers and the exceptional quality of the electron beam at MAMI. The research, led by doctoral student Tianhao Shao, provided new insights into the nuclear structure of 6H, indicating a stronger neutron interaction than previously predicted. The project was funded by prestigious institutions such as the German Research Foundation, China's National Key Research and Development Program, the European Union's Horizon 2020 program, as well as other national scientific foundations. This achievement opens up new avenues for studying nuclear physics and challenges the existing theories on neutron-rich isotopes.