The Solar
Neutrino “Problem”
The solar interior can not be observed directly because it is highly opaque to radiation.
But neutrinos can penetrate huge amounts of material without being absorbed.
Davis solar neutrino experiment
Early solar neutrino experiments detected a much lower flux of neutrinos than expected (® the “solar
neutrino problem”).
Recent results have proven that neutrinos change (“oscillate”) between different types (“flavors”), thus solving the solar neutrino problem.
