What is the mass of neutrinos?  To answer one of the most fundamental and important open questions in modern particle physics and cosmology, the KATRIN Karlsruhe Tritium Neutrino Experiment was designed and built by an international collaboration at Karlsruhe Institute of Technology (KIT) in southwest Germany. A special Inauguration Colloquium on June 11 marks the start of its long-term data taking phase.

Press release 069/2018, "Neutrinos Weighed by the World´s Most Precise Scale"