This discovery is the culmination of over two years of research, and will have important implications for the fields of particle physics and cosmology.

Schematic view of the
Super-Kamiokande detector

This site explains what all the excitement is about. It's designed so that you can selectively visit the topics which interest you, or follow a guided tour through all the topics. No prior knowledge of physics required! Many of the terms used, if not defined immediately, are linked to a brief explanation in the Glossary. Click on one the topics below, or on the neutrino symbol at left to start the guided tour.