CONFIRMATION OF SOLAR NEUTRINO OSCILLATIONS
The Sudbury Neutrino Observatory was a Canadian experiment that employed heavy water in a deep underground detector to detect neutrinos. The collaboration released conclusive evidence of solar neutrino oscillation in 2002, after originally announcing the phenomena in 2001. This was the definitive answer to Ray Davis’ solar neutrino problem: when they got to Earth, neutrinos from the sun changed from electron to various flavors.