 Sudbury Neutrino Observatory

The Sudbury Neutrino Observatory (SNO) is a unique experimental facility located nearly two kilometers underground in the Creighton mine near Sudbury, Ontario, Canada. It was designed to detect and study neutrinos, which are subatomic particles that are notoriously difficult to detect due to their weak interaction with matter. SNO was primarily focused on studying neutrinos produced by nuclear reactions occurring in the core of the Sun.