Tuesday, October 6, 2015 5:08 pm
Takaaki Kajita of Japan and Arthur B. McDonald of Canada were awarded the Nobel Physics Prize on Tuesday for determining that neutrinos have mass, a key piece of the puzzle in understanding the cosmos.
The findings are so far-reaching that they challenge the so-called Standard Model, the conceptual model of fundamental particles and forces, it said.
Neutrinos are lightweight neutral particles that are created as the result of nuclear reactions, such as the process that makes the Sun shine.
Next to particles of light called photons, they are the most abundant particles in the Universe.