The Solar Neutrino Problem — Science’s Original Neutrino Mystery

Posted on Categories Discover Magazine

Back in 1938, physicist Hans Bethe figured out that the Sun and other stars generate energy by fusing hydrogen into helium. With that mystery solved, solar scientists thought they had a pretty good understanding of what was going on at the heart of the sun.

But an experiment that started in 1967 made astronomers just a tad uneasy.

While it takes sunlight just eight minutes to travel to Earth, the energy generated in our star’s core needs tens or hundreds of thousands of years to me

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