Georgi, HowardGlashow, Sheldon2016-09-072000Georgi, Howard, and S. L. Glashow. 2000. “Neutrinos on Earth and in the Heavens.” Phys. Rev. D 61 (9) (April 4). doi:10.1103/physrevd.61.097301. http://dx.doi.org/10.1103/PhysRevD.61.097301.0556-2821http://nrs.harvard.edu/urn-3:HUL.InstRepos:28265573Recent data lead us to a simple and intriguing form of the neutrino mass matrix. In particular, we find solar neutrino oscillations to be nearly maximal (and rule out the small-angle MSW explanation of solar neutrino observations) if relic neutrinos comprise at least one percent of the critical mass density of the universe.en-USJournal Article2016-09-0710.1103/PhysRevD.61.097301