The first experiment to detect electron neutrinos created by the sun, often known as solar neutrinos, was led by Ray Davis, a chemist at Brookhaven National Laboratory. His experiment, which took place in a massive tank deep underground in the Homestake Gold Mine in South Dakota, counted neutrinos using dry cleaning fluid (perchloroethylene). The experiment, however, discovered only one-third of the number of solar neutrinos predicted by astrophysicist John Bahcall, resulting in the “solar neutrino conundrum.” Scientists feared something was wrong with the Davis Experiment or their model of the sun at first, but it was later discovered that their knowledge of neutrinos was incorrect.